Release History

2.13.32020-05-10GA Release 2.13.3
2.13.22020-04-23GA Release 2.13.2
2.13.12020-02-25GA Release 2.13.1
2.13.02019-12-11GA Release 2.13.0
2.12.12019-08-06GA Release 2.12.1
2.12.02019-06-23GA Release 2.12.0
2.11.22019-02-04GA Release 2.11.2
2.11.12018-07-22GA Release 2.11.1
2.11.02018-03-11GA Release 2.11.0
2.10.02017-11-18GA Release 2.10.0
2.9.12017-09-17GA Release 2.9.1
2.9.02017-08-26GA Release 2.9.0
2.8.22017-04-02GA Release 2.8.2
2.8.12017-02-26GA Release 2.8.1
2.82017-01-21GA Release 2.8
2.72016-10-02GA Release 2.7
2.6.22016-07-05GA Release 2.6.2
2.6.12016-06-05GA Release 2.6.1
2.62016-05-25GA Release 2.6
2.52015-12-06GA Release 2.5
2.4.12015-10-08GA Release 2.4.1
2.42015-09-20GA Release 2.4
2.32015-05-09GA Release 2.3
2.22015-02-22GA Release 2.2
2.12014-10-19GA Release 2.1
2.0.22014-08-16Bug fixes and enhancements
2.0.12014-07-29Bug fixes
2.02014-07-12GA Release
2.0-rc22014-06-21Bug fixes and enhancements
2.0-rc12014-02-16Bug fixes and enhancements
2.0-beta92013-09-14Bug fixes and enhancements
2.0-beta82013-07-10Bug fixes and enhancements
2.0-beta72013-06-01Bug fixes and enhancements
2.0-beta62013-05-05Bug fixes and enhancements
2.0-beta52013-04-20Bug fixes and enhancements
2.0-beta42013-01-28Bug fixes and enhancements
2.0-beta32012-11-11Bug fixes and enhancements
2.0-beta22012-10-07Bug fixes and enhancements
2.0-beta12012-09-18Bug fixes and enhancements
2.0-alpha22012-08-24Bug fixes and minor enhancements
2.0-alpha12012-07-29Rewrite of Log4j

Release 2.13.3 – 2020-05-10

FixFix NullPointerException in ThreadContextDataInjector. Fixes LOG4J2-2838.rgoers

Release 2.13.2 – 2020-04-23

FixImplement requiresLocation in GelfLayout to reflect whether location information is used in the message Pattern. Fixes LOG4J2-2824. Thanks to CrazyBills.rgoers
FixAdd option to restore printing timeMillis in the JsonLayout. Fixes LOG4J2-2588.rgoers
FixInitialize pattern processor before triggering policy during reconriguration. Fixes LOG4J2-2766.rgoers
UpdateAllow the file extension in the file pattern to be modified during reconfiguration. Fixes LOG4J2-2457.rgoers
FixAdd information about using a url in log4j.configurationFile. Fixes LOG4J2-2810.rgoers
FixserializeToBytes was checking wrong variable for null. Fixes LOG4J2-2813. Thanks to Keith D Gregory.rgoers
FixFix Javadoc for ScriptPatternSelector. Fixes LOG4J2-2814.rgoers
FixAllow trailing and leading spaces in log level. Fixes LOG4J2-2793. Thanks to Renukaprasad C.rgoers
UpdateAdd support for specifying an SSL configuration for SmtpAppender. Fixes LOG4J2-2819.mattsicker
UpdateAllow servlet context path to be retrieved without "/". Fixes LOG4J2-2520.rgoers
UpdateAllow Spring Lookup to return default and active profiles. Fixes LOG4J2-2818.rgoers
FixCorrect JsonLayout timestamp sorting issue. Fixes LOG4J2-2791. Thanks to Johan Karlberg.rgoers
FixAllow the file size action to parse the value without being sensitive to the current locale. Fixes LOG4J2-2817. Thanks to Trejkaz.rgoers
FixMake YamlLayoutTest more resiliant to environmental differences. Fixes LOG4J2-2794. Thanks to Johan Karlberg.rgoers
UpdateAllow Spring Boot applications to use composite configuratons. Fixes LOG4J2-2815.rgoers
AddProvide a Log4j implementation of System.Logger. Fixes LOG4J2-1360. Thanks to Kevin Leturc.rgoers
FixConditionally allocate PluginEntry during PluginCache loading. Fixes LOG4J2-2790. Thanks to Marius Volkhart.rgoers
FixAdd missing includeLocation parameter when creating AsyncLogger. Fixes LOG4J2-2811. Thanks to Kuojian21.rgoers
FixFix Exceptions when whitespace is in the file path and Java security manager is used. Fixes LOG4J2-2761. Thanks to Uwe Schindler.rgoers
FixAvoid NullPointerException when StackWalker returns null. Fixes LOG4J2-2809. Thanks to Romain Manni-Bucau.rgoers
AddAdded EventLookup to retrieve fields from the log event. Fixes LOG4J2-2807.rgoers
FixTimeFilter did not handle daylight saving time transitions and did not support a range over 2 days. Fixes LOG4J2-2805.rgoers
UpdateAdd ContextDataProviders as an alternative to having to implement a ContextDataInjector. Fixes LOG4J2-2779.rgoers
Update[JDBC] Throw a AppenderLoggingException instead of an NPE in the JDBC database manager. Fixes LOG4J2-2812.ggregory

Release 2.13.1 – 2020-02-25

FixSlow initialization on Windows due to accessing network interfaces. Fixes LOG4J2-2717.rgoers
UpdateConditionally perform status logging calculations in PluginRegistry. Fixes LOG4J2-2789. Thanks to Marius Volkhart.rgeors
FixPrevent LoggerContext from being garbage collected while being created. Fixes LOG4J2-2756.rgoers
FixDo not log an error if Files.move does not work. Fixes LOG4J2-2769.rgoers
FixRollover fails when file matches pattern but index is too large. Fixes LOG4J2-2039.rgoers
FixCounter stuck at 10 and overwriting files when leading zeros used in the file pattern count. Fixes LOG4J2-2784.rgoers
FixClassLoaderContextSelector was not locating the LoggerContext during shutdown. Fixes LOG4J2-2746.rgoers
FixJSON output wrong when using additonal fields. Fixes LOG4J2-2652.rgoers
FixGraalVM does not allow use of MethodHandles. Fixes LOG4J2-2649.rgoers
FixAllow Lookup keys with leading dashes by using a slash as an escape character. Fixes LOG4J2-2211.rgoers
UpdateUse LinkedBlockingQueue instead of synchronized collction in StatusConfiguration. Fixes LOG4J2-2782.rgoers
FixServletContainerInitializer was obtaining the StatusLogger too soon. Fixes LOG4J2-2781. Thanks to qxo.rgoers
FixPluginProcessor should use Messager instead of System.out. Fixes LOG4J2-2676. Thanks to Gregg Donovan.rgoers
FixMapMessage.getFormattedMesssage() would incorrectly format objects. Fixes LOG4J2-2703. Thanks to Volkan Yazici.rgoers
FixAlways write header on a new OutputStream. Fixes LOG4J2-2760. Thanks to Christoph Kaser.rgoers
UpdateAdd a retry count attribute to the KafkaAppender. Fixes LOG4J2-2777. Thanks to joongs4.rgoers
FixAn error message in RollingFileAppender uses a placeholder for the name but does not specify the name argument in the logging call. Fixes LOG4J2-2776. Thanks to Christoph Kaser.rgoers
FixNullPointerException when using a custom DirectFileRolloverStrategy without a file name. Fixes LOG4J2-2758. Thanks to Christoph Kaser.rgoers
FixAdd mulit-parameter overloads to LogBuilder. Fixes LOG4J2-2768. Thanks to Marius Volkhart.rgoers
FixFixed NullPointerException after reconfiguring via JMX. Fixes LOG4J2-2770. Thanks to Bill Kuker.rgoers
FixRollingFileAppender was not rolling on startup if createOnDemand was set to true. Fixes LOG4J2-2759.rgoers
FixWarn if pattern is missing on Routes element. Use default route. Fixes LOG4J2-2767.rgoers
FixFix lock contention in the classloader using new versions of slf4j without EventData on slf4j logger creation. Fixes LOG4J2-2415. Thanks to Andrey Turbanov.ckozak
FixRollover handles parallel file deletion gracefully. Fixes LOG4J2-2677.ckozak
FixRemove unnecessary EventLogger references from log4j-slf4j18-impl due to removal from slf4j. Fixes LOG4J2-2744.ckozak
UpdateUpdate log4j-slf4j18-impl slf4j version to 1.8.0-beta4 from 1.8.0-alpha2. Fixes LOG4J2-2745.ckozak
FixFix a memory leak using fully asynchronous logging when the queue is full using the 'discard' asynchronous queue full strategy. Fixes LOG4J2-2747.ckozak
FixFix erroneous log4j-jul recursive logger detection resulting in some no-op JUL loggers and 'WARN Recursive call to getLogger' being reported by the status logger. Fixes LOG4J2-2739.ckozak
AddImplement ISO8601_PERIOD_MICROS fixed date format matching ISO8601_PERIOD with support for microsecond precision. Fixes LOG4J2-2748.ckozak
FixPluginCache output is reproducible allowing the annotation processor to produce deterministic results. Fixes LOG4J2-2735. Thanks to Andy Wilkinson.ckozak
FixFix StackLocator.getCallerClass performance in cases where Reflection.getCallerClass is not accessible. Fixes LOG4J2-2751.ckozak
FixMutableLogEvent and RingBufferLogEvent avoid StringBuffer and parameter array allocation unless reusable messages are used. Fixes LOG4J2-2752.ckozak
FixLoaderUtil.getClassLoaders may discover additional loaders and no longer erroneously returns a result with a null element in some environments. Fixes LOG4J2-2754.ckozak
FixCronExpression.getBeforeTime() would sometimes return incorrect result. Fixes LOG4J2-2575. Thanks to Nathan Friess.rgoers
Fix[JDBC] MS-SQL Server JDBC driver throws SQLServerException when inserting a null value for a VARBINARY column. Fixes LOG4J2-2762.ggregory
UpdateUpdate dependencies. Fixes LOG4J2-2763.ggregory
FixNullPointerException after reconfiguring via JMX. Fixes LOG4J2-2770. Thanks to Bill Kuker.ggregory

Release 2.13.0 – 2019-12-11

FixPrevent recursive calls to java.util.LogManager.getLogger(). Fixes LOG4J2-2058.rgoers
FixLOG4J2-2725 - Added try/finally around event.execute() for RingBufferLogEventHandler to clear memory correctly in case of exception/error. Fixes LOG4J2-2725. Thanks to Dzmitry Anikechanka.ckozak
FixWrong java version check in ThreadNameCachingStrategy. Fixes LOG4J2-2635. Thanks to Filipp Gunbin.rgoers
FixUse a less confusing name for the CompositeConfiguration source. Fixes LOG4J2-2674. Thanks to Anton Korenkov.rgoers
AddAdd ThreadContext.putIfNotNull method. Fixes LOG4J2-2732. Thanks to Matt Pavlovich.rgoers
AddAdd a Level Patttern Selector. Fixes LOG4J2-2731.rgoers
UpdateUpdate Jackson to 2.9.10. Fixes LOG4J2-2701.rgoers
FixAdd setKey method to Kafka Appender Builder. Fixes LOG4J2-2727. Thanks to Clément
FixArrayIndexOutOfBoundsException could occur with MAC address longer than 6 bytes. Fixes LOG4J2-2707. Thanks to Christian Frank.rgoers
AddAdd experimental support for Log4j 1 configuration files. Fixes LOG4J2-63.rgoers
FixThe rolling file appenders would fail to compress the file after rollover if the file name matched the file pattern. Fixes LOG4J2-2712.rgoers
AddAdd the ability to lookup Kubernetes attributes in the Log4j configuration. Allow Log4j properties to be retrieved from the Spring environment if it is available. Fixes LOG4J2-2716.rgoers
AddAllow Spring Boot application properties to be accessed in the Log4j 2 configuration. Add lower and upper case Lookups. Fixes LOG4J2-2710.rgoers
UpdateAllow message portion of GELF layout to be formatted using a PatternLayout. Allow ThreadContext attributes to be explicitly included or excluded in the GelfLayout. Fixes LOG4J2-2709.rgoers
Fix@PluginValue does not support attribute names besides "value". Fixes LOG4J2-2693.mattsicker
FixValidation blocks definition of script in properties configuration. Fixes LOG4J2-2647.mattsicker
FixSet result of rename action to true if file was copied. Fixes LOG4J2-2680. Thanks to Guillermo Xavier Hurtado Garcia.rgoers
FixAdd automatic module names where missing. Fixes LOG4J-2672. Thanks to Stephen Colebourne.rgoers
AddAdd builder pattern to Logger interface. Fixes LOG4J2-2639.rgoers
FixOutputStreamAppender.Builder ignores setFilter(). Fixes LOG4J2-2673. Thanks to Yuichi Sugimura.ggregory
FixPrevent a memory leak when async loggers throw errors. Fixes LOG4J2-2725. Thanks to Dzmitry Anikechanka.ckozak

Release 2.12.1 – 2019-08-06

FixAllow file renames to work when files are missing from the sequence. Fixes LOG4J2-1946. Thanks to Igor Perelyotov.rgoers
FixSupport emulating a MAC address when using ipv6. Fixes LOG4J2-2650. Thanks to Mattia Bertorello.rgoers
FixRemove references to LoggerContext when it is shutdown. Fixes LOG4J2-2366.rgoers
UpdateMake Log4j Core optional for Log4j 1.2 API. Fixes LOG4J2-2556.rgoers
FixImprove the performance of capturing location information. Fixes LOG4J2-2644.rgoers
UpdateUpdate MongoDB 3 driver from 3.10.1 to 3.10.2. Fixes LOG4J2-2646.ggregory
UpdateImprove exception messages in the JDBC appender. Fixes LOG4J2-2657.ggregory
FixAbstractAction.reportException records a warning to the status logger, providing more information when file based appenders fail to compress rolled data asynchronously. Fixes LOG4J2-2658.ckozak
FixAbstractAction handles and records unchecked RuntimeException and Error in addition to IOException. Fixes LOG4J2-2659.ckozak
UpdateRetry when JDBC throws a java.sql.SQLTransactionRollbackException in commitAndClose(). Fixes LOG4J2-2660.ggregory
Fix"Values not bound to statement" when using JDBC appender, appender does not respect bufferSize="0". Fixes LOG4J2-2667. Thanks to Gary Gregory, Edith Chui.ggregory

Release 2.12.0 – 2019-06-23

FixRollingRandomAccessFileAppender error message referenced incorrect class name. Fixes LOG4J2-2547.rgoers
FixRestore constructor to ThrowablePatternConverter that was removed in 2.8.2. Fixes LOG4J2-2616.rgoers
FixStructuredDataId was ignoring maxLength atribute. Fixes LOG4J2-2622.rgoers
FixRFC5424Layout was not properly setting default Structured Element id for the MDC. Fixes LOG4J2-2636.rgoers
AddAllow zero padding the counter of a RollingFileAppender. Fixes LOG4J2-2403. Thanks to hupfdule.rgoers
AddAdd filter that will match events when no marker is present. Fixes LOG4J2-2427. Thanks to Rimaljit Kaur.rgoers
FixLookups were not found if the plugin key was not lowercase. Fixes LOG4J2-1143. Thanks to Pascal Heinrich.rgoers
AddAdd reconfiguration methods to Configurator. Fixes LOG4J2-2406.rgoers
FixLocate plugins within a Jar using a URL Connection. Fixes LOG4J2-1852. Thanks to Tanner Altares.rgoers
FixExplicitly set file creation time. Fixes LOG4J2-2610.rgoers
FixJEP223 version detection fix for JDK 9 and up. Fixes LOG4J2-2561. Thanks to Ulrich Enslin.rgoers
FixFailoverAppender was failing with ERROR appender Failover has no parameter that matches element Failovers. Fixes LOG4J2-1103. Thanks to Seán Dunne.rgoers
FixUpdate file time when size based triggering policy is used without a time-based triggering policy. Fixes LOG4J2-2602.rgoers
FixThrow better exception message when both log4j-slf4j-impl and log4j-to-slf4j are present. Fixes LOG4J2-2597.rgoers
AddAdd support for reconfiguration via HTTP(S), Docker, and Spring Cloud Configuration. Fixes LOG4J2-913.rgoers
AddTCP Appender should support a host name resolving to multiple IP addresses. Fixes LOG4J2-2586.rgoers
FixNullPointerException in JdbcAppender.createAppender(). Fixes LOG4J2-2559. Thanks to Li Lei, Gary Gregory.ggregory
UpdateUpdate tests from H2 1.4.197 to 1.4.199. Thanks to Gary Gregory.ggregory
UpdateUpdate Jackson from 2.9.7 to 2.9.8. Fixes LOG4J2-2570. Thanks to Gary Gregory.ggregory
UpdateUpdate MongoDB 3 module driver from 3.9.0 to 3.10.1. Fixes LOG4J2-2574. Thanks to Gary Gregory.ggregory
FixStackOverflowException when server not reachable with SocketAppender. Fixes LOG4J2-2592. Thanks to Dávid Kaya, Gary Gregory.ggregory
AddAllow custom end-of-line with JsonLayout. Fixes LOG4J2-2337. Thanks to Arvind Sahare, Patrice Ferrot.ggregory
AddGZIP compression on rollover supports configurable compression levels. Fixes LOG4J2-2598. Thanks to Carter Kozak.ckozak
Fixjava.lang.StackOverflowError at org.apache.logging.log4j.junit.AbstractExternalFileCleaner.println( Fixes LOG4J2-2598. Thanks to Gary Gregory.ggregory
FixMapPatternConverter is properly created from the '%K', '%map', and '%MAP' patterns. PatternConverter instanceOf methods with unknown parameter types no longer elide those with known parameters. Fixes LOG4J2-2564.ckozak
AddAsyncQueueFullPolicy configuration short values "Default" and "Discard" are case insensitive to avoid confusion. Fixes LOG4J2-2611.ckozak
FixNullPointerException at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.writeInternal( Fixes LOG4J2-2612.ggregory
FixPossible ClassCastException in org.apache.logging.log4j.core.script.ScriptManager.ScriptManager(Configuration, WatchManager). Fixes LOG4J2-2618.ggregory
UpdateUpdate Jackson from 2.9.8 to 2.9.9. Fixes LOG4J2-2619.ggregory
FixRoutingAppender PurgePolicy implementations no longer stop appenders referenced from the logger configuration, only those that have been created by the RoutingAppender. Note that RoutingAppender.getAppenders no longer includes entries for referenced appenders, only those which it has created. Fixes LOG4J2-2631.ckozak
FixFix a race allowing events not to be recorded when a RoutingAppender purge policy attempts to delete an idle appender at exactly the same time as a new event is recorded. Fixes LOG4J2-2629.ckozak
FixAsynchronous logging when the queue is full no longer results in heavy CPU utilization and low throughput. Fixes LOG4J2-2606.ckozak
UpdateRefactor several AsyncLogger methods below the 35 byte threshold for inlining. Fixes LOG4J2-2634.ckozak
AddAdd and use method org.apache.logging.log4j.message.MapMessage.toKey(String) for simpler subclasses. Fixes LOG4J2-2634.ggregory

Release 2.11.2 – 2019-02-04

FixDocument that Properties element must be the first configuration element. Fixes LOG4J2-2500.rgoers
FixAdd Log4j-to-SLF4J to BOM pom.xml. Fixes LOG4J2-2543. Thanks to Dermot Hardy.rgoers
FixUse the file pattern as the FileManager "name" when no filename is present. Fixes LOG4J2-2061.rgoers
FixExpose LoggerContext.setConfiguration as a public method. Fixes LOG4J2-2009.rgoers
FixCronTriggeringPolicy was not rolling properly, especially when used with the SizeBasedTriggeringPolicy. Fixes LOG4J2-2542.rgoers
FixLoad PropertySources from any accessible ClassLoader. Hide any exceptions that may occur accessing a PropertySource. Fixes LOG4J2-2266.rgoers
FixLogging with a lambda expression with a method call that also logs would cause logs within method call to reference line num and method name of the parent method. Fixes LOG4J2-1570.rgoers
UpdateSwitch from CLIRR to RevAPI for detecting API changes. Fixes LOG4J2-1576.rgoers
FixSizeBasedTriggeringPolicy was not honored when using the DirectWriteRolloverStrategy if the machine restarts. Fixes LOG4J2-2485. Thanks to Giovanni Matteo Fumarola.rgoers
FixDirect write was creating files with the wrong date/time. Fixes LOG4J2-1906.rgoers
FixAdd Log4j-slf4j18-impl dependency to bom pom. Fixes LOG4J2-2453. Thanks to theit.rgoers
FixConfiguration documentation referenced incorrect method name. Fixes LOG4J2-2515. Thanks to MakarovS.rgoers
FixMake Strings.toRootUpperCase a static method so it can be accessed. Fixes LOG4J2-2514. Thanks to smilebrian0515.rgoers
FixFixed Appenders section in Extending Log4j. Fixes LOG4J2-1571. Thanks to torbenmoeller.rgoers
UpdateImprove exception logging performance. ThrowableProxy construction uses a faster method to discover the current stack trace. ThrowablePatternConverter and ExtendedThrowablePatternConverter default configurations no longer allocate an additional buffer for stack trace contents. Fixes LOG4J2-2391.ckozak
FixPredeployment of PersistenceUnit that using Log4j as session logger failed (#198). Fixes LOG4J2-2397. Thanks to EckelDong.ggregory
FixNameAbbreviator correctly abbreviates first fragments (#188). Fixes LOG4J2-2365. Thanks to Eugene Zimichev.ckozak
FixFix memory leak in ReusableParameterizedMessage. Fixes LOG4J2-2201.ckozak
FixReusableObjectMessage parameter is properly passed to appenders (#203). Fixes LOG4J2-2363. Thanks to Brian Laub.ckozak
FixNullPointerException when closing never used RollingRandomAccessFileAppender. Fixes LOG4J2-2418. Thanks to Jonas Rutishauser.ggregory
FixHandle some unchecked exceptions while loading plugins. Fixes LOG4J2-2422. Thanks to rswart, Gary Gregory.ggregory
FixSetting a null ErrorHandler on AbstractAppender is not allowed and will no-op as expected. Fixes LOG4J2-2441.ckozak
FixErrorHandler is invoked with a LogEvent and Throwable when possible, where previously only a string was used. Fixes LOG4J2-2444.ckozak
UpdateLet the NullAppender default its name to "null". Fixes LOG4J2-2447.ggregory
UpdateUpdate Jackson from 2.9.6 to 2.9.7. Fixes LOG4J2-2468.ggregory
UpdateUpdate Apache Commons Compress from 1.17 to 1.18. Fixes LOG4J2-2469.ggregory
UpdateUpdate Apache Commons CSV from 1.5 to 1.6. Fixes LOG4J2-2470.ggregory
UpdateUpdate javax.mail from 1.6.1 to 1.6.2. Fixes LOG4J2-2471.ggregory
UpdateUpdate mongo-java-driver 3 from 3.8.0 to 3.8.2. Fixes LOG4J2-2472.ggregory
FixExceptions are added to all columns when a JDBC Appender's ColumnMapping uses a Pattern. Fixes LOG4J2-2413. Thanks to Andres Luuk, Gary Gregory.ggregory
FixColumnMapping literal not working. Fixes LOG4J2-2466. Thanks to Paolo Bonanomi, Gary Gregory.ggregory
FixAbstractStringLayoutStringEncodingBenchmark returns the computed variables on each benchmark to avoid DCE. Fixes LOG4J2-2478. Thanks to Diego Elias Costa.ckozak
FixStackOverflowError at AwaitCompletionReliabilityStrategy. Fixes LOG4J2-2134. Thanks to David del Amo Mateos, Gary Gregory.ggregory
FixAvoid NullPointerExceptions in org.apache.logging.log4j.core.config.AbstractConfiguration for null arguments. Fixes LOG4J2-2481.ggregory
FixRollingRandomAccessFileManager ignores new file patterns from programmatic reconfiguration. Fixes LOG4J2-2457. Thanks to Heiko Schwanke, Gary Gregory.ggregory
FixBasicContextSelector cannot be used in a OSGI application. Fixes LOG4J2-2482. Thanks to Rob Gansevles.ggregory
Fixorg.apache.log4j.SimpleLayout and ConsoleAppender missing in log4j-1.2-api. Fixes LOG4J2-2476. Thanks to Al Bundy.ggregory
UpdateJDBC Appender should release parameter resources ASAP. Fixes LOG4J2-2489.ggregory
UpdateAllow all Appenders to optionally carry a Property array. Fixes LOG4J2-2491.ggregory
FixJmsAppender reconnectIntervalMillis cannot be set from a configuration file. Fixes LOG4J2-2497.ggregory
FixJMS Appender may throw a NullPointerException when JMS is not up while the Appender is starting. Fixes LOG4J2-2499.ggregory
AddJDBC Appender should reconnect to the database when a connection goes stale. Fixes LOG4J2-2496.ggregory
UpdateBetter handling of %highlight pattern when using jul-bridge. Fixes LOG4J2-2405. Thanks to Marco Herrn.ggregory
UpdateUpdate MongoDB driver from 3.8.2 to 3.9.0 for log4j-mongodb3 module. Fixes LOG4J2-2503.ggregory
AddLet JDBC PoolingDriverConnectionSource with Apache Commons DBCP configure a PoolableConnectionFactory. Fixes LOG4J2-2505.ggregory
FixJDBC Appender fails when using both parameter, source, and literal ColumnMapping elements. Fixes LOG4J2-2508.ggregory
AddAllow a JDBC Appender to truncate strings to match a table's metadata column length limit. Fixes LOG4J2-2509.ggregory
AddPatternLayout %date conversion pattern should render time zone designator for ISO-ISO8601. Fixes LOG4J2-1246.ggregory
FixPrevent ConcurrentModificationException while iterating over ListAppender events. Fixes LOG4J2-2527.ckozak
FixFix regression using MapMessageLookup.lookup with MapMessages that do not implement StringMapMessage. Fixes LOG4J2-2522. Thanks to Adam Lesiak.ckozak
FixGeneralize checks using MapMessage implementations with do not extend StringMapMessage. Introduce new JAVA_UNQUOTED MapMessage format type based on the JAVA formatting, but without quoted values. Fixes LOG4J2-2530. Thanks to Travis Spencer.ckozak
FixFix a regression introduced by LOG4J2-2301 in 2.11.1 allowing allocation to occur in AsyncLoggerConfig. Fixes LOG4J2-2533. Thanks to Michail Prusakov.ckozak

Release 2.11.1 – 2018-07-22

FixThrowableProxy was saving and retrieving cache entries using different keys. Fixes LOG4J2-2389. Thanks to Liu Wen.rgoers
FixIf root LoggerConfig does not have a Level return ERROR. Fixes LOG4J2-2316.rgoers
FixFix broken links in log4j web documentation. Fixes LOG4J2-2390. Thanks to anton-balaniuc.rgoers
UpdateAllow composite configuration for context parameter. Fixes LOG4J2-1721. Thanks to Phokham Nonava.rgoers
FixThe OSGi Activator specified an incorrect version. Fixes LOG4J2-2343. Thanks to Raymond Augé.rgoers
FixMake java.util.ServiceLoader properly work in OSGi by using the Service Loader Mediator Specification. Fixes LOG4J2-2305. Thanks to Björn Kautler.rgoers
FixSplit the SLF4J binding into 2 implementations - one for SLF4J 1.7.x and one for SLF4J 1.8+. Fixes LOG4J2-2305.rgoers
FixImprove plugin error message when elements are missing. Fixes LOG4J2-2268. Thanks to Tilman Hausherr.rgoers
FixParserConfigurationException when using Log4j with oracle.xml.jaxp.JXDocumentBuilderFactory. Fixes LOG4J2-2283. Thanks to Vishnu Priya Matha.ggregory
FixPoolingDriverConnectionSource does not take into account properties, user name, and password. Fixes LOG4J2-2300.ggregory
UpdateStatus logger should show the Log4j name and version when initializing itself. Fixes LOG4J2-2302.ggregory
UpdateLog4j2 2.8.2 JMX unregister NullPointerException. Fixes LOG4J2-2304. Thanks to wumengsheng.ggregory
UpdateUpdate Jackson from 2.9.4 to 2.9.5. Fixes LOG4J2-2311.ggregory
UpdateUpdate LMAX Disruptor from 3.3.7 to 3.4.2. Fixes LOG4J2-2313.ggregory
UpdateLog4j 2.0 ERROR "Could not search jar" with JBoss EAP 6.2. Fixes LOG4J2-548. Thanks to Shehata, Paresh Varke, Eric Victorson, Martin Laforet.ggregory
FixMutableLogEvent and RingBufferLogEvent message mementos retain the original format string. Fixes LOG4J2-2307.ckozak
FixCurly braces in parameters are not treated as placeholders. Fixes LOG4J2-2032. Thanks to Kostiantyn Shchepanovskyi.ckozak
FixMutableLogEvent.getNonNullImmutableMessage and Log4jLogEvent.makeMessageImmutable retain format and parameters. Fixes LOG4J2-2317.ckozak
FixMessages are no longer mutated when the asynchronous queue is full. A warning is logged to the status logger instead. Fixes LOG4J2-2318.ckozak
FixFix NPE in AbstractLogger when another exception is thrown, masking the root cause. Fixes LOG4J2-2320.ckozak
FixAsyncLogger uses the correct level when unspecified. This provides parity between AsyncLogger and Logger. Fixes LOG4J2-2321.ckozak
FixCustom ContextSelector implementations which select an AsyncLoggerContext disable LoggerConfig.includeLocation by default for parity with AsyncLoggerContextSelector. Fixes LOG4J2-2322.ckozak
FixMutableLogEvent references to other objects are cleared after each use. Fix a memory leak causing references to parameters to be held after synchronous logging with thread locals enabled. Fixes LOG4J2-2269.ckozak
UpdateUpdate JAnsi from 1.17 to 1.17.1. Fixes LOG4J2-2328.ggregory
FixMixed async loggers no longer forget parameter values, providing some appenders with an array of nulls. Fixes LOG4J2-2301.ckozak
FixRollingFileManager debug logging avoids string concatenation and errant braces in favor of parameterized logging. Fixes LOG4J2-2331. Thanks to Mike Baranski.ckozak
FixHandle errors thrown in default disruptor ExceptionHandler implementations to avoid killing background threads. Fixes LOG4J2-2333.ckozak
FixAdd API org.apache.logging.log4j.core.appender.AsyncAppender.getQueueSize(). Fixes LOG4J2-2334.ggregory
FixRemove duplicate hyphen from the AsyncLoggerConfig background thread name. Fixes LOG4J2-2336.ckozak
FixUpdate Apache Commons Compress from 1.16.1 to 1.17. Fixes LOG4J2-2347.ggregory
UpdateAdded AbstractLogEvent.getMutableInstant to allow the MutableInstant instance to be modified by classes extending AbstractLogEvent. Fixes LOG4J2-2351.ckozak
FixRingBufferLogEvent memento messages provide the expected format string, and no longer attempt to substitute parameters into curly braces in parameter toString values. Both RingBufferLogEvent and MutableLogEvent memento implementations memoize results to avoid rebuilding formatted string values. Fixes LOG4J2-2352.ckozak
FixPropertiesUtil ignores non-string system properties. Fixes a NoClassDefFoundError initializing StatusLogger caused by an NPE while initializing the static PropertiesUtil field. Fixes LOG4J2-2355. Thanks to Henrik Brautaset Aronsen.ckozak
UpdateUpdate Jackson from 2.9.5 to 2.9.6. Fixes LOG4J2-2357.ggregory
UpdateUpdate Kafka client from 1.0.0 to 1.1.0. Fixes LOG4J2-2358.ggregory
FixFixed a memory leak in which ReusableObjectMessage would hold a reference to the most recently logged object. Fixes LOG4J2-2362.ckozak
FixJackson layouts used with AsyncLoggerContextSelector output the expected format rather than only a JSON string of the message text. Fixes LOG4J2-2312.ckozak
FixFixed a memory leak in which ReusableParameterizedMessage would hold a reference to the most recently logged throwable and provided varargs array. Fixes LOG4J2-2364.ckozak
FixNested logging doesn't clobber AbstractStringLayout cached StringBuidlers. Fixes LOG4J2-2368.ckozak
FixStringBuilders.escapeJson implementation runs in linear time. Escaping large JSON strings in EncodingPatternConverter and MapMessage will perform significantly better. Fixes LOG4J2-2373. Thanks to Kevin Meurer.ckozak
FixStringBuilders.escapeXml implementation runs in linear time. Escaping large XML strings in EncodingPatternConverter and MapMessage will perform significantly better. Fixes LOG4J2-2376. Thanks to Kevin Meurer.ckozak
FixNullPointerException in org.apache.logging.log4j.util.LoaderUtil.getClassLoaders() when using Bootstrap class loader. Fixes LOG4J2-2377. Thanks to Mirko Rzehak, Gary Gregory.ggregory
FixUpdate Mongodb 3 driver from 3.6.3 to 3.8.0. Fixes LOG4J2-2382.ggregory
UpdateUpdate Kafka client from 1.1.0 to 1.1.1. Fixes LOG4J2-2384.ggregory
UpdateUpdate Groovy from 2.4.13 to 2.5.1. Fixes LOG4J2-2385.ggregory
UpdateUpdate optional Apache Commons DBCP from 2.2.0 to 2.4.0. Fixes LOG4J2-2386.ggregory
FixThread indefinitely blocked when logging a message in an interrupted thread. Fixes LOG4J2-2388. Thanks to Failled.ggregory

Release 2.11.0 – 2018-03-11

FixLoaderUtil was not looping properly over classloaders. Fixes LOG4J2-2104.rgoers
FixRevert OSGi API version to 4.3.1. Fixes LOG4J2-1976.rgoers
UpdateDocumentation fix in manual page for custom configurations. Fixes LOG4J2-2273. Thanks to Bruno P. Kinoshita.rpopma
UpdateReusable LogEvents now pass the original format string to downstream components like layouts and filters. Fixes LOG4J2-2252. Thanks to Carter Kozak.rpopma
AddAdd API to enable iterating over message parameters without creating temporary objects. Fixes LOG4J2-2253. Thanks to Carter Kozak.rpopma
FixMove module-info.class to META-INF/versions/9 directory. Fixes LOG4J2-2271.rgoers
FixIncorrect automatics module name header was being included in manifests. Fixes LOG4J2-2254.rgoers
FixNullPointerException would occur when header was provided to a Layout on RollingRandingAccessFileAppender with DirectWriteRolloverStrategy. Fixes LOG4J2-2247.rgoers
UpdateThe internal status logger timestamp format is now configurable with system property `log4j2.StatusLogger.DateFormat`. Fixes LOG4J2-2250.rpopma
UpdateRemoved unnecessary dependency on jcommander since Log4j uses embedded picocli since 2.9. Fixes LOG4J2-2236.rpopma
AddAdded support for precise (micro and nanosecond) timestamps when running on Java 9. A limited number of precise %d date formats are supported with PatternLayout. POTENTIAL BREAKING CHANGE: The XML, JSON and YAML formats have changed: they no longer have the "timeMillis" attribute and instead have an "Instant" element with "epochSecond" and "nanoOfSecond" attributes. Fixes LOG4J2-1883. Thanks to Anthony Maire.rpopma
AddOutput JSON object for ObjectMessage in JsonLayout. Fixes LOG4J2-2190. Thanks to Franz Wong.mikes
AddMade log4j-core a multi-release ("multi-version") jar, added log4j-core-java9 module. Fixes LOG4J2-2191.rpopma
FixLog4j2 throws NoClassDefFoundError in Java 9 in java.util.ServiceLoader. Fixes LOG4J2-2129. Thanks to Blazej Bucko.rgoers
FixFixed bug where ThreadContext map was cleared, resulting in entries being only available for one log event. Fixes LOG4J2-2158. Thanks to Björn Kautler.rpopma
FixAvoid null attribute values in DefaultConfigurationBuilder. Fixes LOG4J2-2002. Thanks to Paul Burrowes.mikes
FixFix typo in Property Substitution docs. Fixes LOG4J2-2175. Thanks to Behrang Saeedzadeh.mikes
FixAllow SortedArrayStringMap to be filtered upon deserialization. Fix build error in Java 9 when compiling log4j-core test classes. Fixes LOG4J2-2163.rgoers
FixDon't create exit message in traceExit(R) when logging is disabled. Fixes LOG4J2-2157. Thanks to Malte Skoruppa.ggregory
FixDefaultMergeStrategy did not merge filters on loggers correctly. Fixes LOG4J2-2123. Thanks to Jacob Tolar.rgoers
UpdateUpdate version of maven bundle plugin to 3.4.0. Convert bundle plugin error to a warning. Fixes LOG4J2-2146.rgoers
UpdateReduce compiler warnings in log4j-api. Fixes LOG4J2-2215.rpopma
AddAdd missing converters to PatternLayout. Fixes LOG4J2-2143.mikes
AddAdd API org.apache.logging.log4j.core.lookup.Interpolator.getStrLookupMap(). Fixes LOG4J2-2160.ggregory
UpdateRemoved unnecessary threadlocal StringBuilder field from MdcPatternConverter. Fixes LOG4J2-2127. Thanks to Carter Kozak.rpopma
FixRemoved compile-time dependency on Java Management APIs from Log4J API module to improve compatibility with Android Platform which does not support JMX extensions. Fixes LOG4J2-2126. Thanks to Oleg Kalnichevski.rpopma
UpdateRequire Java 9 to compile the log4j-perf module to allow benchmarking with Java 9 APIs. Fixes LOG4J2-2194.rpopma
UpdateUpdate JMH to version 1.19 from 1.1.1. Fixes LOG4J2-2193.rpopma
UpdateUpdate ZeroMQ's jeromq from 0.4.2 to 0.4.3. Fixes LOG4J2-2132.ggregory
UpdateUpdate Jackson from 2.9.2 to 2.9.3. Fixes LOG4J2-2165.ggregory
AddThe MongoDB Appender should use a keys and values for a Log4j MapMessage. Fixes LOG4J2-2179.ggregory
AddAdd a MongoDbProvider builder for and deprecate org.apache.logging.log4j.mongodb.MongoDbProvider.createNoSqlProvider(). Fixes LOG4J2-2180.ggregory
AddThe JDBC Appender should use keys and values from a Log4j MapMessage. Fixes LOG4J2-2181.ggregory
UpdateUpdate MongoDB driver from 3.0.4 to 3.6.1. Fixes LOG4J2-2184.ggregory
AddAdd a simple JDBC DriverManager-based ConnectionSource that uses JDBC's DriverManager#getConnection(String, String, String). Fixes LOG4J2-2185.ggregory
UpdateDocument default property value support. Fixes LOG4J2-2197. Thanks to Fabrice Daugan.ggregory
UpdateUpdate MongoDB dependencies from classic to modern. Fixes LOG4J2-2198.ggregory
AddAdd a JDBC ConnectionSource that provides pooling through Apache Commons DBCP 2. Fixes LOG4J2-2186.ggregory
AddAdd a hook for a Connection Source for a JDBC Appender to release its resources. Fixes LOG4J2-2187.ggregory
AddAdd org.apache.logging.log4j.core.util.WatchManager#unwatch(File). Fixes LOG4J2-2203.ggregory
Updateorg.apache.logging.log4j.core.util.WatchManager.getWatchers() should pre-allocate its new Map. Fixes LOG4J2-2204.ggregory
AddAdd method org.apache.logging.log4j.core.util.WatchManager.reset(File) and reset(). Fixes LOG4J2-2206.ggregory
AddAdd debug logging to org.apache.logging.log4j.mongodb.MongoDbConnection. Fixes LOG4J2-2208.ggregory
UpdateRename existing MongoDb plugin and related artifacts from MongoDb to MongoDb2. Fixes LOG4J2-2209.ggregory
UpdateFix error log message for Script which says ScriptFile instead. Fixes LOG4J2-2210. Thanks to Björn Kautler.ggregory
UpdateUnnecessary contention in CopyOnWriteSortedArrayThreadContextMap. Fixes LOG4J2-2212. Thanks to Daniel Feist, Gary Gregory.ggregory
UpdateUnnecessary contention in GarbageFreeSortedArrayThreadContextMap. Fixes LOG4J2-2213. Thanks to Daniel Feist, Gary Gregory.ggregory
UpdateUnnecessary contention in DefaultThreadContextMap. Fixes LOG4J2-2214. Thanks to Daniel Feist, Gary Gregory.ggregory
UpdateNullPointerException at org.apache.logging.log4j.util.Activator.loadProvider( in log4j 2.10.0. Fixes LOG4J2-2182. Thanks to liwenxian2017, Gary Gregory.ggregory
UpdateMarkerFilter onMismatch invalid attribute in .properties. Fixes LOG4J2-2202. Thanks to Kilian, Gary Gregory.ggregory
UpdateConfiguration builder classes should look for "onMismatch", not "onMisMatch". Fixes LOG4J2-2219. Thanks to Kilian, Gary Gregory.ggregory
UpdateNew module log4j-mongodb3: Remove use of deprecated MongoDB APIs and code to the Java driver version 3 API. Fixes LOG4J2-2205. Thanks to Gary Gregory.ggregory
UpdateSplit off JPA support into a new module log4j-jpa. Fixes LOG4J2-2188. Thanks to Gary Gregory.ggregory
UpdateUpdate Jackson from 2.9.3 to 2.9.4. Fixes LOG4J2-2229. Thanks to Gary Gregory.ggregory
UpdateCannot see or copy all of certain JAnsi exception messages on Windows due to NUL characters. Fixes LOG4J2-2243. Thanks to Gary Gregory.ggregory
UpdateUpdate Apache Commons Compress from 1.15 to 1.16.1. Fixes LOG4J2-2245. Thanks to Gary Gregory.ggregory
UpdateUpdate MongoDB 3 module from driver 3.6.1 to 3.6.3. Fixes LOG4J2-2259.ggregory
Update[SMTP] Update javax.mail from 1.6.0 to 1.6.1. Fixes LOG4J2-2260.ggregory
UpdateUpdate JAnsi from 1.16 to 1.17. Fixes LOG4J2-2264.ggregory
FixStrings::join, when called with [null] returns "null" instead of EMPTY. Fixes LOG4J2-2270. Thanks to Cyril Martin.ggregory
FixConcurrentModificationException from org.apache.logging.log4j.status.StatusLogger.<clinit>( Fixes LOG4J2-2276. Thanks to Sean Baxter.ggregory
FixAllow EnvironmentPropertySource to run with a SecurityManager that rejects environment variable access. Fixes LOG4J2-2274. Thanks to Sebastien Lannez.ggregory
FixAllow SystemPropertiesPropertySource to run with a SecurityManager that rejects system property access. Fixes LOG4J2-2279. Thanks to Gary Gregory.ggregory

Release 2.10.0 – 2017-11-18

FixXML Schema for DynamicFilterThreshold does not accept multiple KeyValuePairs. Fixes LOG4J2-2289. Thanks to Hari Menon.ggregory
AddProperly escape newlines and other control characters in JSON. Fixes LOG4J2-2120. Thanks to Carter Douglas Kozak.mikes
AddAdd property to disable message pattern converter lookups. Fixes LOG4J2-2109. Thanks to Carter Douglas Kozak.mikes
AddMapMessage should use deep toString for values. Fixes LOG4J2-2112. Thanks to Carter Douglas Kozak.mikes
FixMapMessage supports both StringBuilderFormattable and MultiformatMessage. Fixes LOG4J2-2107. Thanks to Carter Douglas Kozak.mikes
FixMapMessage JSON encoding will escape keys and values. Fixes LOG4J2-2102. Thanks to Carter Douglas Kozak.mikes
FixNon-string value in MapMessage caused ClassCastException. Fixes LOG4J2-2101. Thanks to Carter Douglas Kozak.mikes
AddXML encoding for PatternLayout. Fixes LOG4J2-2103.mikes
AddProvide a native Log4j 2 implementation of Eclipse Jetty's org.eclipse.jetty.util.log.Logger. Fixes LOG4J2-2114.ggregory
AddAllow filtering of line breaks in layout pattern. Fixes LOG4J2-1203. Thanks to Robert Turner.mikes
AddAdd a noop AppenderSkeleton for applications still using Log4j 1.x. Fixes LOG4J2-2098.rgoers
FixLog4j respects the configured "" property. Fixes LOG4J2-2091. Thanks to Carter Douglas Kozak.mikes
FixLevelMixIn class for Jackson is coded incorrectly. Fixes LOG4J2-2100.ggregory
FixJansi now needs to be enabled explicitly (by setting system property `log4j.skipJansi` to `false`). To avoid causing problems for web applications, Log4j will no longer automatically try to load Jansi without explicit configuration. Fixes LOG4J2-2087. Thanks to Andy Gumbrecht.rpopma
FixAbstractDatabaseManager should make a copy of LogEvents before holding references to them: AsyncLogger log events are mutable. Fixes LOG4J2-2060.rpopma
UpdateSplit up log4j-nosql into one module per appender. Fixes LOG4J2-2076.mikes
UpdateUpgrade picocli to 2.0.3 from 0.9.8. Fixes LOG4J2-2088.rpopma
AddAdd possibility of sending the key of a message to Kafka using KafkaAppender. Fixes LOG4J2-2062. Thanks to Jorge Sanchez.mikes
AddModularize Log4j-api and make most other log4j jars automatic modules. Fixes LOG4J2-2056.rgoers
AddSimplify log4j system property naming scheme. Fixes LOG4J2-1431.mattsicker
AddAdd global configuration environment SPI. Fixes LOG4J2-1809.mattsicker
UpdateProvide support for overriding the Tomcat Log class in Tomcat 8.5+. Fixes LOG4J2-2025.rgoers
AddAdd fields with fixed values to JSON/XML/YAML layouts. Fixes LOG4J2-1694. Thanks to Michal Dvořák.mikes
AddProvide ways to configure SSL that avoid plain-text passwords in the log4j configuration. The configuration may now specify a system environment variable that holds the password, or the path to a file that holds the password. Fixes LOG4J2-2054.rpopma
UpdateSupport new SLF4J binding mechanism introduced in SLF4J 1.8. Fixes LOG4J2-2057.rgoers
UpdateDisable thread name caching by default when running on Java 8u102 or later. Fixes LOG4J2-2052.rpopma
FixIf Log4j is used as the Tomcat logging implementation startup might fail if an application also uses Log4j. Fixes LOG4J2-2055.rgoers
UpdateUpdate classes in in APIs from String to a PasswordProvider producing char[] for passwords. Fixes LOG4J2-1896.rpopma
FixUntil this change, messages appeared out of order in log file any time when the async logging queue was full. With this change, messages are only logged out of order to prevent deadlock when Log4j2 detects recursive logging while the queue is full. Fixes LOG4J2-2031.rpopma
FixException java.nio.charset.UnsupportedCharsetException: cp65001 in 2.9.0. Fixes LOG4J2-2053.ggregory
FixNested pattern layout options broken. Fixes LOG4J2-1216. Thanks to Thies Wellpott, Barna Zsombor Klara, GFriedrich.ggregory
FixLog4j1XmlLayout does not provide the entire stack trace, it is missing the caused by information. Fixes LOG4J2-2070. Thanks to Doug Hughes.ggregory
FixCompositeConfiguration supports Reconfiguration. PR #115. Fixes LOG4J2-2036. Thanks to Robert Haycock.ggregory
AddAdd org.apache.logging.log4j.core.config.composite.CompositeConfiguration#toString(). Fixes LOG4J2-2071. Thanks to Carter Kozak.ggregory
FixLog4j-config.xsd should make AppenderRef optional for each Logger element. Fixes LOG4J2-2073. Thanks to Patrick Lucas.ggregory
FixThe console appender should say why it cannot load JAnsi. Fixes LOG4J2-2074.ggregory
FixWrong Apache Commons CSV version referenced in the Javadoc of CsvParameterLayout. Fixes LOG4J2-2085. Thanks to István Neuwirth.ggregory
UpdateUpdate LMAX disruptor from 3.3.6 to 3.3.7. Fixes LOG4J2-2078.ggregory
UpdateUpdate Apache Commons Compress from 1.14 to 1.15. Fixes LOG4J2-2081.ggregory
Update[TagLib] Update servlet-api provided dependency from 2.5 to 3.0.1. Fixes LOG4J2-2089.ggregory
UpdateUpdate Apache Kafka kafka-clients from to 1.0.0. Fixes LOG4J2-2096.ggregory
UpdateUpdate from Jackson 2.9.1 to 2.9.2. Fixes LOG4J2-2077.ggregory
UpdateJackson dependencies for 2.9.2 incorrectly bring in jackson-annotations 2.9.0 instead of 2.9.2. Fixes LOG4J2-2117.ggregory

Release 2.9.1 – 2017-09-17

FixPrevent ConcurrentModificationException with AsyncLoggerConfig. Fixes LOG4J2-1988.rpopma
FixPrevent ConcurrentModificationException with AsyncLoggerConfig. Fixes LOG4J2-1914.rpopma
FixIncrease default queue size for AsyncAppender from 128 to 1024. Fixes LOG4J2-2048.rpopma
FixFix documentation to clarify disruptor-3.3.4 is now required for async loggers (previously the docs referred to disruptor-3.3.3 which was never released). Fixes LOG4J2-2035.rpopma
FixInspect all known ClassLoaders to locate the service provider. Fixes LOG4J2-2030.rgoers
FixJava 9 StackLocator was not properly skipping the initial stack frames. Fixes LOG4J2-2028. Thanks to Jason Tedor.rgoers
UpdateUse a class' canonical name instead of name to create its logger name. Fixes LOG4J2-2023.ggregory
Fixjava.lang.AbstractMethodError: javax.xml.parsers.DocumentBuilderFactory.setFeature(). Fixes LOG4J2-2026. Thanks to Leon Finker.ggregory
FixMarker examples should not use deprecated flow APIs. Fixes LOG4J2-2029. Thanks to Fabrizio Cucci.ggregory
FixClassNotFoundException when making all loggers asynchronous under OSGi environment. Fixes LOG4J2-1936. Thanks to Helber Belmiro.ggregory
UpdateUpdate Jackson from 2.9.0 to 2.9.1 (fix for Java 9.). Fixes LOG4J2-2043.ggregory
UpdateUpdate Apache Commons CSV from 1.4 to 1.5. Fixes LOG4J2-2044.ggregory
UpdateUpdate javax.mail from 1.5.6 to 1.6.0. Fixes LOG4J2-2045.ggregory
UpdateUpdate Apache Commons Compress from 1.13 to 1.14. Fixes LOG4J2-2046.ggregory
UpdateUpdate Cassandra driver from 3.1.0 to 3.1.4. Fixes LOG4J2-2047.ggregory
UpdateUpdate Apache Kafka Client from to Fixes LOG4J2-2049.ggregory

Release 2.9.0 – 2017-08-26

UpdateAdd support for DirectWriteRolloverStrategy to RollingRandomAccessFileAppender. Fixes LOG4J2-1928.rgoers
FixPrevent NullPointerException when a file name is specified with the DirectWriteRolloverStrategy. Fixes LOG4J2-1833.rgoers
UpdateRFC5424Layout now prints the process id. Fixes LOG4J2-2022.rgoers
UpdateRemove default layout from KafkaAppender. Fixes LOG4J2-2020.mikes
FixFix incorrect documentation for LoggerNameLevelRewritePolicy. Fixes LOG4J2-2018.rpopma
FixParameter of mdcId in SyslogAppender has no default value. Fixes LOG4J2-922. Thanks to angus.aqlu, Paul Burrowes.ggregory
FixStyleConverter.newInstance argument validation is incorrect. Fixes LOG4J2-2001. Thanks to Paul Burrowes.ggregory
FixHighlightConverter converts all unrecognized levels to DEBUG. Fixes LOG4J2-1999. Thanks to Paul Burrowes.ggregory
FixSslSocketManager does not apply SSLContext on TCP reconnect. Fixes LOG4J2-2013. Thanks to Taylor Patton, Gary Gregory.ggregory
UpdateUse a class' canonical name instead of name to create its logger name. Fixes LOG4J2-2023.ggregory
UpdateAllow KeyStoreConfiguration and TrustStoreConfiguration to find files as resources. Fixes LOG4J2-2015.ggregory
UpdateReplace JCommander command line parser with picocli to let users run Log4j2 utility applications without requiring an external dependency. Fixes LOG4J2-2011.rpopma
AddSupport printing multiple StructuredData elements in RFC5424Layout. Fixes LOG4J2-2008.rgoers
AddPublic API for parsing the output from JsonLayout/XmlLayout/YamlLayout into a LogEvent. Fixes LOG4J2-1986.mikes
UpdateAllow maxLength of StructuredData to be specified by the user. Fixes LOG4J2-1984.rgoers
UpdateAllow for bufferSize=0 in SMTP appender. Fixes LOG4J2-1071. Thanks to Ben Ludkiewicz, Benjamin Jaton.ggregory
AddJsonLayout, XmlLayout and YamlLayout support 0-byte termination of log events. Fixes LOG4J2-1981.mikes
AddSupport capped collections for MongoDb appender. Fixes LOG4J2-1864. Thanks to Matthias Kappeller.mattsicker
FixMark FileRenameAction as successful when using alternative ways to move files. Fixes LOG4J2-2016. Thanks to Benjamin Jaton.ggregory
FixNo compression when using a separate drive in Linux. Fixes LOG4J2-2012. Thanks to Benjamin Jaton.ggregory
FixLog4j throws a java.nio.charset.UnsupportedCharsetException: cp65001. Fixes LOG4J2-1888. Thanks to Misagh Moayyed.ggregory
FixConcurrentModificationException logging a parameter of type Map. Fixes LOG4J2-1990. Thanks to Philippe Mouawad.ggregory
FixSocketAppender will lose several events after re-connection to server. Fixes LOG4J2-1311. Thanks to Xibing Liang.ggregory
FixConsider the StringBuilder's capacity instead of content length when trimming. Fixes LOG4J2-1977. Thanks to Jerry xnslong.ggregory
FixRegister log4j-core as an OSGi service. Skip tests for LOG4J2-1766 on MacOS. Use group "staff" for LOG4J2-1699 test on MacOS. Fixes LOG4J2-1971.rgoers
FixTcpSocketServer does not close accepted Sockets. Fixes LOG4J2-1994.ggregory
FixLog4J JUL Bridge and RMI Security Manager causes access denied ("java.util.logging.LoggingPermission" "control"). Fixes LOG4J2-1987. Thanks to Andreas Felder.ggregory
FixLog4j-config.xsd only allows one AppenderRef element for each Logger element. Fixes LOG4J2-1982. Thanks to Christoph Lembeck.ggregory
FixFix default buffer size to match documentation (from 8102 to 8192 a.k.a. 8KB.). Fixes LOG4J2-1985. Thanks to Kenneth McFarland.ggregory
AddLog4j2 will now print all internal logging to the console if system property `log4j2.debug` is defined with any value (or no value). Fixes LOG4J2-1813.rpopma
UpdateAsync Loggers no longer use deprecated LMAX Disruptor APIs. (Disruptor-3.3.3 or higher is now required.). Fixes LOG4J2-1261.rpopma
UpdateImproved error message when misconfigured with multiple incompatible appenders targeting same file. Fixes LOG4J2-1908.rpopma
UpdateConfigurations with multiple root loggers now fail loudly. Fixes LOG4J2-1954.rpopma
UpdateDeprecate SerializedLayout and remove it as default. Fixes LOG4J2-1958.mikes
UpdateDisable DTD processing in XML configuration files. Fixes LOG4J2-1959.mikes
AddTemporary compress directory during rollover (#88). Fixes LOG4J2-1766. Thanks to Pierrick HYMBERT.ggregory
UpdateFix docker build with jdk9 requirements (#84). Fixes LOG4J2-1950. Thanks to Pierrick HYMBERT.ggregory
UpdateAdd more detail to WARN "Ignoring log event" messages printed to the console after log4j was shut down. Fixes LOG4J2-1801.rpopma
AddAdded wrapper classes CustomLoggerGenerator and ExtendedLoggerGenerator to avoid class name with a dollar ($) character which has special meaning in many *nix command line environments. Fixes LOG4J2-1814.rpopma
AddAdded process ID (pid) pattern converter. Fixes LOG4J2-1884.rpopma
UpdateFacilitate log4j use in Android applications: remove dependency on RMI and Management APIs from log4j-api. Fixes LOG4J2-1926.rpopma
AddConfigurable Log File Permissions with PosixFilePermission. Fixes LOG4J2-1699. Thanks to Demetrios Dimatos, Pierrick HYMBERT.ggregory
AddGenerate source jas for all test jars. Fixes LOG4J2-1945.ggregory
AddJMS Appender does not know how to recover from a broken connection. Fixes LOG4J2-1934.ggregory
AddJMS Appender should be able connect to a broker (later) even it is not present at configuration time. Fixes LOG4J2-1955.ggregory
UpdateJMS Appender broker password should be a char[], not a String. Fixes LOG4J2-1956.ggregory
AddAdded methods ::writeBytes(ByteBuffer) and ::writeBytes(byte[], int, int) to ByteBufferDestination interface and use these methods in TextEncoderHelper where possible to prepare for future enhancements to reduce lock contention. Fixes LOG4J2-1874. Thanks to Roman Leventov.rpopma
FixCompositeConfiguration logs warning "Unable to determine URI for configuration." However, the reconfiguration is completed. Fixes LOG4J2-1912. Thanks to R Ri.ggregory
FixDynamic reconfiguration does not work for filePattern of RollingFile. Fixes LOG4J2-1964. Thanks to Pierrick HYMBERT.ggregory
FixReconfigure breaks DirectWriteRolloverStrategy. Fixes LOG4J2-1961. Thanks to Christian Vent.ggregory
FixThe eventPrefix attribute was being ignored in the RFC5424Layout. Fixes LOG4J2-1943.rgoers
FixJndiManager is not released when the JmsAppender builder catches an exception trying to build itself. Fixes LOG4J2-1953.ggregory
FixImprove the documentation of the DynamicThresholdFilter. Fixes LOG4J2-1911.rgoers
FixEOFException with FormattedMessage. Fixes LOG4J2-1929. Thanks to Borys Sokolov.ggregory
FixTrim levels read from properties file to remove trailing spaces. Fixes LOG4J2-1948. Thanks to Michael Lück.ggregory
FixClassCastException: org.eclipse.osgi.internal.loader.SystemBundleLoader$1 cannot be cast to java.lang.ClassLoader. Fixes LOG4J2-1971. Thanks to liwenxian2017.ggregory
AddGeneric HTTP appender. Fixes LOG4J2-1442.mikes
AddAdd with(String, primitive) methods to org.apache.logging.log4j.message.MapMessage. Fixes LOG4J2-1935.ggregory
AddAdd forEach() methods to org.apache.logging.log4j.message.MapMessage. Fixes LOG4J2-1930.ggregory
AddAdd containsKey() methods to org.apache.logging.log4j.message.MapMessage. Fixes LOG4J2-1932.ggregory
UpdateSupport using java.util.ServiceLoader to locate Log4j 2 API providers. Fixes LOG4J2-1917.rgoers
UpdateInclude separator option of PatternLayout in manual (and other updates). Fixes LOG4J2-1966. Thanks to M Sazzadul Hoque.ggregory
AddSupport null byte delimiter in GelfLayout. Fixes LOG4J2-1854. Thanks to Xavier Jodoin.mikes
AddAdd support for Java 9 StackWalker. Fixes LOG4J2-1359.rgoers
AddWarn when a configuration file for an inactive ConfigurationFactory is found. Fixes LOG4J2-1880.mikes
AddAdd an optional random delay in TimeBasedTriggeringPolicy. Fixes LOG4J2-1855. Thanks to Anthony Maire.mattsicker
FixMore reliable checking for runtime dependencies. Fixes LOG4J2-1876.mikes
FixFix configuration documentation. Fixes LOG4J2-1867.mikes
FixEnsure the ThreadLocal StringBuilder in ParameterizedMessage won't hold excessively much memory after logging a long message. Fixes LOG4J2-1858.rpopma
FixFix documentation about default additivity value for loggers. Fixes LOG4J2-1885.mattsicker
FixScriptEngineManager is not available in Android and causes a NoClassDefFoundError. Fixes LOG4J2-1920. Thanks to Ajitha.ggregory
FixClarify Javadoc for AbstractTriggeringPolicy. Fixes LOG4J2-1989. Thanks to Kenneth McFarland.ggregory
FixFix compiler warnings in LoggerConfigTest. Fixes LOG4J2-1993. Thanks to Kenneth McFarland.ggregory
UpdateMove server components from log4j-core to new log4-server module. Fixes LOG4J2-1851.mikes
AddShortcut to add Property and KeyValuePair component in ConfigurationBuilder. Fixes LOG4J2-1860.mikes
AddThe JMS Appender should use a JMS MapMessage for a Log4j MapMessage. Fixes LOG4J2-1294.ggregory
UpdateRefactor SimpleMessage to be concise and clear (#100). Fixes LOG4J2-1991.ggregory
UpdateUpdate Jackson from 2.8.9 to 2.9.0. Fixes LOG4J2-2017.ggregory
UpdateUpdate ZeroMQ's JeroMQ from 0.3.6 to 0.4.0. Fixes LOG4J2-1868.ggregory
UpdateUpdate ZeroMQ's JeroMQ from 0.4.0 to 0.4.1. Fixes LOG4J2-1960.ggregory
UpdateUpdate ZeroMQ's JeroMQ from 0.4.1 to 0.4.2. Fixes LOG4J2-1974.ggregory
UpdateUpdate Kafka client from to Fixes LOG4J2-1869.ggregory
UpdateUpdate Kafka client from to Fixes LOG4J2-1962.ggregory
UpdateUpdate JavaMail from 1.5.5 to 1.5.6. Fixes LOG4J2-1872.ggregory
UpdateUpdate JAnsi from 1.14 to 1.15. Fixes LOG4J2-1879.ggregory
UpdateMissing documentation for Max index limit in DefaultRolloverStrategy. Fixes LOG4J2-1877. Thanks to Chandra Tungathurthi.ggregory
UpdateAdd missing getters to classes in package Fixes LOG4J2-1899.ggregory
UpdateUpdate JAnsi from 1.15 to 1.16. Fixes LOG4J2-1900.ggregory
UpdateUpdate SLF4J from 1.7.24 to 1.7.25. Fixes LOG4J2-.ggregory
UpdateUpdate Jackson from 2.8.7 to 2.8.9. Fixes LOG4J2-1938.ggregory
UpdateUpdate HdrHistogram from 2.1.8 to 2.1.9. Fixes LOG4J2-1970.rpopma
UpdateUpdate javax.persistence from 2.1.0 to 2.1.1. Fixes LOG4J2-1975.ggregory
UpdateUpdate org.osgi.core from 4.3.1 to 6.0.0. Fixes LOG4J2-1976.ggregory

Release 2.8.2 – 2017-04-02

FixFix JavaDoc on org.apache.logging.log4j.ThreadContext about inheritance. Fixes LOG4J2-1861.mattsicker
FixFix JavaDoc about @Order and OrderComparator ordering. Fixes LOG4J2-1862. Thanks to wangyuntao.mattsicker
FixFixed daylight savings time (DST) issue with FixedDateFormat. Fixes LOG4J2-1849.rpopma
FixFix CassandraRule and unit tests on Windows. Fixes LOG4J2-1850. Thanks to Ludovic Hochet.mattsicker
FixFix typo in %replace converter documentation. Fixes LOG4J2-1840. Thanks to Pradeep Balasundaram.mattsicker
FixHandle when LogEvent.getLoggerName() returns null in LoggerNameLevelRewritePolicy. Fixes LOG4J2-1846.mikes
FixHandle when LogEvent.getLoggerName() returns null in KafkaAppender. Fixes LOG4J2-1845.mikes
FixThe default value of RandomAccessFileAppender.Builder append field is wrong. Fixes LOG4J2-1853. Thanks to wangyuntao.ggregory
AddAdd support for filtering input in TcpSocketServer and UdpSocketServer. Fixes LOG4J2-1863.mattsicker
AddAdd JSON encoding support to EncodingPatternConverter %encode{}. Fixes LOG4J2-1848.mattsicker
AddAdd support for appending common suffix to each line of throwable stack trace. Fixes LOG4J2-1843. Thanks to Zilong Song.mattsicker
AddAdd support for appending common suffix to each line of extended and root throwable stack trace. Fixes LOG4J2-1838. Thanks to Zilong Song.mattsicker
UpdateMove integration tests to their own module to speed up build. Fixes LOG4J2-1827.rgoers
FixFix documentation about the licensing for JeroMQ. Fixes LOG4J2-1835.mattsicker
FixUpdate the API version to 2.6.0. Fixes LOG4J2-1836.rgoers
FixNullPointerException in HtmlLayout. Fixes LOG4J2-1831. Thanks to Edward Serebrinskiy.ggregory
FixLog4j 2.8 can lose exceptions when a security manager is present. Fixes LOG4J2-1820. Thanks to Jason Tedor.ggregory
UpdateUpdate Jackson from 2.8.6 to 2.8.7. Fixes LOG4J2-1856.ggregory

Release 2.8.1 – 2017-02-26

FixAllow %i in file pattern to be preceded with characters other than just '-'. Fixes LOG4J2-1804. Thanks to Pierrick Hymbert.rgoers
UpdateUpdate SLF4J to 1.7.24. Fixes LOG4J2-1822.rgoers
UpdateImproved error message when log4j 2 configuration file not found. Fixes LOG4J2-1812.rpopma
UpdateUpdate to use Logback 1.1.10 and then Logback 1.2 for tests. Fixes LOG4J2-1810.rgoers
UpdateUpdate Jackson from 2.8.5 to 2.8.6. Fixes LOG4J2-1819.ggregory
FixFix ClassNotFoundException org.apache.logging.log4j.core.util.ExecutorServices in OSGi tests. Fixes LOG4J2-1753. Thanks to Ludovic Hochet.ggregory
FixChange minOccur to minOccurs in Log4j-config.xsd. Fixes LOG4J2-1816. Thanks to shubhankar1100.rpopma
FixFix Maven POM to ensure JMH generated classes in log4j-perf are included in benchmarks jar. Fixes LOG4J2-1803.rgoers
FixReport errors when sending to Kafka when using syncSend=false. Fixes LOG4J2-1800. Thanks to Vincent Tieleman.mikes
FixFixed rare race condition in FixedDateFormat, made FixedDateFormat::millisSinceMidnight method public. Fixes LOG4J2-1805.rpopma
FixFixed bug in PropertiesUtil::getCharsetProperty that caused UnsupportedCharsetException for ConsoleAppender. Fixes LOG4J2-1799. Thanks to Eduard Gizatullin.rpopma
FixFix Javadoc for DefaultRolloverStrategy::purgeAscending. Fixes LOG4J2-1806. Thanks to challarao.rpopma
FixFix rollover to work when filePattern contains no directory components. Fixes LOG4J2-1818. Thanks to xkr47.ggregory
AddRemove deprecation on MessageSupplier lambda functions in Logger API. Fixes LOG4J2-1823.mattsicker
Add[core] Add and implement LogEvent.toImmutable(). Fixes LOG4J2-1807.ggregory

Release 2.8 – 2017-01-21

FixEliminate the use of the ExecutorServices in the LoggerContext. Fixes LOG4J2-1780.mikes
AddMake DefaultRolloverStrategy more efficient when renaming files. Add nomax option to the fileIndex attribute. Fixes LOG4J2-1032.rgoers
AddRollingFileAppender now supports omitting the file name and writing directly to the archive files. Fixes LOG4J2-1101.rgoers
FixConfigurationScheduler now preserves interrupt flag during stop. Fixes LOG4J2-1786.rpopma
AddAllow default value in property to be a Lookup. Fixes LOG4J2-1243.rgoers
FixFixed bug where AsyncLogger did not resolve configuration properties. Fixes LOG4J2-1779.rpopma
FixFixed concurrency issue affecting all layouts except PatternLayout and GelfLayout, which caused scrambled output and exceptions when logging synchronously from multiple threads. Fixes LOG4J2-1769. Thanks to Brandon Goodin.rpopma
FixUsing variables in GelfLayout's additional fields at runtime. Fixes LOG4J2-1724. Thanks to Alexander Krasnostavsky.mikes
FixAdd Builder to GelfLayout. Fixes LOG4J2-1762.mikes
FixInsure the ConfigurationScheduler shuts down without blocking. Fixes LOG4J2-1649. Thanks to Georg Friedrich.rgoers
FixCronTriggeringPolicy would use the wrong date/time when rolling over and create multiple triggering policies on reconfiguration. Fixes LOG4J2-1653. Thanks to Georg Friedrich.rgoers
FixDo not use non-daemon thread pool for rollover tasks. Fixes LOG4J2-1748.mikes
FixFixed file locking regression in FileAppender introduced in 2.6. Fixes LOG4J2-1628.rpopma
FixThe custom logger Generate tool no longer requires the log4j-api module on the classpath. Fixes LOG4J2-1744.rpopma
FixSslSocketManager now respects connectTimeoutMillis. Fixes LOG4J2-1731. Thanks to Chris Ribble.rpopma
FixLogger using LocalizedMessageFactory prints key instead of message. Fixes LOG4J2-1682. Thanks to Markus Waidhofer.ggregory
FixMake GelfLayout independent of Jackson. Fixes LOG4J2-1720.mikes
FixFixed race condition in ObjectMessage and SimpleMessage, ensuring that the log message contains the value the object has during the logging call. Fixes LOG4J2-1719.rpopma
FixFixed bug where elements of a log message parameter array were nulled out in garbage-free mode. Fixes LOG4J2-1688.rpopma
FixAdd putAll() method to CloseableThreadContext. Fixes LOG4J2-1692. Thanks to Greg Thomas.mikes
FixAdd CleanableThreadContextMap interface supporting method removeAll(Iterable<String>). Fixes LOG4J2-1689.mikes
FixOption 'disableAnsi' in PatternLayout to unconditionally disable ANSI escape codes. Fixes LOG4J2-1685. Thanks to Raman Gupta.mikes
FixMake TimeFilter usable as global filter and as logger filter. Fixes LOG4J2-1706.rpopma
Fix(GC) Avoid allocating temporary objects in VariablesNotEmptyReplacementConverter. Fixes LOG4J2-1722.rpopma
Fix(GC) Avoid allocating temporary objects in EncodingPatternConverter. Fixes LOG4J2-1717.rpopma
Fix(GC) Avoid allocating temporary objects in MapPatternConverter. (Note that constructing a MapMessage is not garbage-free.). Fixes LOG4J2-1716.rpopma
Fix(GC) Avoid allocating temporary objects in MapMessage. Fixes LOG4J2-1683.rpopma
Fix(GC) Avoid allocating temporary objects in NdcPatternConverter. (Note that use of the ThreadContext stack is not garbage-free.). Fixes LOG4J2-1715.rpopma
Fix(GC) Avoid allocating temporary objects in AbstractStyleNameConverter. Fixes LOG4J2-1714.rpopma
Fix(GC) Avoid allocating temporary objects in TimeFilter. Fixes LOG4J2-1680.rpopma
Fix(GC) Avoid allocating temporary objects in StructuredDataFilter. Fixes LOG4J2-1679.rpopma
Fix(GC) Avoid allocating temporary objects in ThreadContextMapFilter. Fixes LOG4J2-1678.rpopma
Fix(GC) Avoid allocating temporary objects in MapFilter. Fixes LOG4J2-1677.rpopma
Fix(GC) Avoid allocating temporary objects in ThresholdFilter. Fixes LOG4J2-1674.rpopma
Fix(GC) Avoid allocating temporary objects in MarkerFilter. Fixes LOG4J2-1673.rpopma
Fix(GC) Avoid allocating temporary objects in LevelRangeFilter. Fixes LOG4J2-1672.rpopma
Fix(GC) Avoid allocating temporary objects in EqualsIgnoreCaseReplacementConverter. Fixes LOG4J2-1671.rpopma
Fix(GC) Avoid allocating temporary objects in EqualsReplacementConverter. Fixes LOG4J2-1670.rpopma
Fix(GC) Avoid allocating temporary objects in MaxLengthConverter. Fixes LOG4J2-1669.rpopma
Fix(GC) Avoid allocating temporary objects in MarkerPatternConverter. Fixes LOG4J2-1668.rpopma
Fix(GC) Avoid allocating temporary objects in SequenceNumberPatternConverter. Fixes LOG4J2-1667.rpopma
Fix(GC) Avoid allocating temporary objects in RelativeTimePatternConverter. Fixes LOG4J2-1666.rpopma
Fix(GC) Avoid allocating temporary objects in IntegerPatternConverter. Fixes LOG4J2-1665.rpopma
FixFixed problems when used in OSGi containers (IllegalAccessError, NoClassDefFoundError). Fixes LOG4J2-1637.rpopma
FixImprove LogEvent serialization to handle non-serializable Messages and deserializing when required classes are missing. Fixes LOG4J2-1226.rpopma
FixEnsure SortedArrayStringMap can be serialized and deserialized without errors regardless of content. Fixes LOG4J2-1663.rpopma
FixPrevent NPE in ThreadContextMapFactory::createThreadContextMap when initializing Log4j with Configurator::initialize and the BasicContextSelector is used. Fixes LOG4J2-1658.rpopma
FixImmutable empty StringMap. Fixes LOG4J2-1645.mikes
FixConfigurable JVM shutdown hook timeout. Fixes LOG4J2-1623.mikes
FixPick up bug fixes from Apache Commons Lang's org.apache.commons.lang3.time package. Fixes LOG4J2-1712.ggregory
FixConsole Appender does not pick up Oracle Java 8's sun.stdout.encoding and sun.stderr.encoding. Fixes LOG4J2-1636. Thanks to Eldar Gabdullin.ggregory
FixFix MemoryMappedFileAppender.createAppender() Javadoc for immediateFlush. Fixes LOG4J2-1639. Thanks to Sridhar Gopinath.ggregory
FixSome LogEvents may not carry a Throwable (Use Message.getThrowable() in log(Message) methods.). Fixes LOG4J2-1676. Thanks to Joern Huxhorn.ggregory
FixUnwanted transitive dependency on geronimo-jms_1.1_spec causes OSGi tests to fail. Fixes LOG4J2-1723. Thanks to Ludovic HOCHET.ggregory
FixImprove OSGi unit tests. Fixes LOG4J2-1664. Thanks to Ludovic HOCHET.ggregory
FixNPE in ThrowableProxy when resolving stack in Java EE/OSGi environment. Fixes LOG4J2-1687. Thanks to Robert Christiansen.ggregory
FixDefaultShutdownCallbackRegistry can throw a NoClassDefFoundError. Fixes LOG4J2-1642. Thanks to Johno Crawford.ggregory
FixCronTriggeringPolicy raise exception and fail to rollover log file when evaluateOnStartup is true. Fixes LOG4J2-1474. Thanks to yin mingjun, Neon.ggregory
FixSslSocketManagerFactory might leak Sockets when certain startup errors occur. Fixes LOG4J2-1734.ggregory
FixTcpSocketManagerFactory might leak Sockets when certain startup errors occur. Fixes LOG4J2-1736.ggregory
FixAdd CronTriggeringPolicy programmatically leads to NPE. Fixes LOG4J2-1740.ggregory
FixCompositeConfiguration does not add filters to appenderRefs. Fixes LOG4J2-1743. Thanks to Toby Shepheard.ggregory
FixAdds xmlns in schema and some other tags. Fixes LOG4J2-1756. Thanks to shubhankar1100.ggregory
UpdateUpdate Conversant Disruptor from 1.2.7 to 1.2.10. Fixes LOG4J2-1781.mattsicker
UpdateReplace MockEJB dependency in unit tests with Spring Test and Mockito. Fixes LOG4J2-1774.mattsicker
UpdateInefficient locking in AbstractLoggerAdapter. Fixes LOG4J2-1644. Thanks to Tim Gokcen, Pavel Sivolobtchik.ggregory
UpdateUpdate JeroMQ from 0.3.5 to 0.3.6. Fixes LOG4J2-1641.ggregory
UpdateUpdate Commons Lang from 3.4 to 3.5. Fixes LOG4J2-1647.mattsicker
UpdateMigrate to Mockito 2.x in unit tests. Fixes LOG4J2-1646.mattsicker
UpdateUpdate Jackson from 2.8.3 to 2.8.4. Fixes LOG4J2-1655.ggregory
UpdateUpdate Jackson from 2.8.4 to 2.8.5. Fixes LOG4J2-1735.ggregory
UpdateUpdate Apache Flume from 1.6.0 to 1.7.0. Fixes LOG4J2-1656.ggregory
UpdateUpdate LMAX Disruptor from 3.3.5 to 3.3.6. Fixes LOG4J2-1698.ggregory
UpdateUpdate Jansi from 1.13 to 1.14. Fixes LOG4J2-1700.ggregory
UpdateUpdate Kafka from to Fixes LOG4J2-1750.ggregory
UpdateUpdate liquibase-core from 3.5.1 to 3.5.3. Fixes LOG4J2-1751.ggregory
UpdateThe log4j-slf4j-impl module now declares a runtime dependency on log4j-core. While not technically required, this makes the log4j-slf4j-impl module behave similarly to slf4j-log4j12, and facilitates migration to Log4j 2. Fixes LOG4J2-1302.rpopma
AddDocument how to exclude transitive conflicting dependencies in Maven and Gradle. Fixes LOG4J2-1787.mattsicker
AddAdd StatusLoggerRule to allow unit tests to set a status level. Fixes LOG4J2-1773.mattsicker
AddAdd non-string data type support to JdbcAppender via new ColumnMapping plugin. Fixes LOG4J2-424.mattsicker
AddAdd a Builder to ColumnConfig and deprecate ColumnConfig.createColumnConfig(). Fixes LOG4J2-1771.mattsicker
AddAdd a Builder to JdbcAppender and deprecate JdbcAppender.createAppender(). Fixes LOG4J2-1770.mattsicker
AddUse MethodHandle in ContextDataFactory cached constructor. Fixes LOG4J2-1764.mattsicker
AddAdd Apache Cassandra appender and ColumnMapping plugin. Fixes LOG4J2-1730.mattsicker
AddAdd TypeConverter for java.util.UUID. Fixes LOG4J2-1759.mattsicker
AddAdd TypeConverter for java.nio.file.Path. Fixes LOG4J2-1758.mattsicker
AddAdd TypeConverter and constraint validators for and port numbers. Fixes LOG4J2-1755.mattsicker
AddRefactor SyslogAppender so that Layout is a Plugin element. Fixes LOG4J2-969.ggregory
AddAdded public method ThreadContext::getThreadContextMap; removed class ThreadContextAccess. Fixes LOG4J2-1660.rpopma
AddAdd documentation regarding YAML configuration format. Fixes LOG4J2-1379.mattsicker
AddIntroduce marker interface AsynchronouslyFormattable. Fixes LOG4J2-1718.rpopma
AddIntroduce interfaces IndexedStringMap and IndexedReadOnlyStringMap, supporting garbage-free iteration over sorted map. Fixes LOG4J2-1681.rpopma
AddAdd a Builder to ScriptPatternSelector and deprecate ScriptPatternSelector.createSelector(). Fixes LOG4J2-1695.ggregory
AddAdd a Builder to MarkerPatternSelector and deprecate MarkerPatternSelector.createSelector(). Fixes LOG4J2-1696.ggregory
AddAdd a SerializerBuilder to PatternLayout and deprecate PatternLayout.createSerializer(). Fixes LOG4J2-1697.ggregory
AddAdd a Builder to RandomAccessFileAppender and deprecate RandomAccessFileAppender.createAppender(). Fixes LOG4J2-1701.ggregory
AddAdd a Builder to MemoryMappedFileAppender and deprecate MemoryMappedFileAppender.createAppender(). Fixes LOG4J2-1703.ggregory
AddAdd a Builder to RollingRandomAccessFileAppender and deprecate RollingRandomAccessFileAppender.createAppender(). Fixes LOG4J2-1704.ggregory
AddAdd a Builder to SyslogAppender and deprecate SyslogAppender.createAppender(). Fixes LOG4J2-1709.ggregory
AddAllow TCP Socket Appender to set socket options. Fixes LOG4J2-1707.ggregory
AddAllow Secure Socket Appender to set socket options. Fixes LOG4J2-1708.ggregory
AddAdd a Builder to SyslogLayout and deprecate SyslogLayout.createLayout(Facility, boolean, String, Charset). Fixes LOG4J2-1737.ggregory
AddAdd a Builder to JsonLayout and deprecate org.apache.logging.log4j.core.layout.JsonLayout.createLayout(Configuration, boolean, boolean, boolean, boolean, boolean, boolean, String, String, Charset, boolean). Fixes LOG4J2-1738.ggregory
AddAdd Builder to KafkaAppender and deprecate KafkaAppender.createAppender(Layout, Filter, String, boolean, String, Property[], Configuration). Fixes LOG4J2-1739.ggregory
AddAdd SyncSend attribute to KafkaAppender (as in KafkaLog4jAppender). Fixes LOG4J2-1733. Thanks to Vincent Tieleman.ggregory
FixCannot define both `filters` and `separator` for PatternLayout %xEx. Fixes LOG4J2-2195. Thanks to Raman Gupta, Gary Gregory.ggregory
FixRootThrowablePatternConverter does not use TextRenderer or line separator options. Fixes LOG4J2-2221. Thanks to Raman Gupta, Gary Gregory.ggregory

Release 2.7 – 2016-10-02

FixFixed ClassCastException when using JUL logging during shutdown. Fixes LOG4J2-1618. Thanks to Raman Gupta.rpopma
Fix2.7-rc1: RollingFileAppender immediateFlush default value should be true, not false. Fixes LOG4J2-1620. Thanks to Sascha Scholz.ggregory
FixImproved performance of context data injector for web applications to be on par with standalone applications. Fixes LOG4J2-1611.rpopma
FixIntroduced new interface LifeCycle2 with stop(long,TimeUnit) method to avoid breaking backwards compatibility with new Configurator.shutdown(LoggerContext, long, TimeUnit) API. Fixes LOG4J2-1591.rpopma
FixFixed issue with filters extending AbstractFilter that did not override methods with unrolled varargs. Fixes LOG4J2-1590.rpopma
FixFixed scrambled log messages triggered by nested logging from toString() method of a logging parameter object. Fixes LOG4J2-1583. Thanks to Larry West.rpopma
FixLog4j threads are no longer leaking on Tomcat shutdown. Fixes LOG4J2-1259. Thanks to Misagh Moayyed, Steffen Offermann.ggregory
FixWhen starting on Google App Engine, Interpolator now suppresses the NoClassDefFoundError stack trace for the jvmrunargs lookup. Fixes LOG4J2-1051. Thanks to Lukasz Lenart.rpopma
FixWhen initializing on platforms where JMX is not available, Interpolator component no longer prints stack trace for warning messages. Fixes LOG4J2-1582.rpopma
FixUnregistering JMX components no longer prints a stack trace when the MBean has already been unregistered. Fixes LOG4J2-1581.rpopma
FixSupport Property values to be specified in configuration as a value attribute as well as an element. Fixes LOG4J2-1313. Thanks to Philipp Knobel, Leon Finker.rpopma
Fix(GC) LoggerConfig now stores configuration properties in a List, not a Map to prevent creating temporary Iterator objects. Added method LoggerConfig#getPropertyList(), deprecated method #getProperties(). Fixes LOG4J2-1575.rpopma
FixFixed class loader deadlock when using async logging and extended stack trace pattern. Fixes LOG4J2-1457. Thanks to Leon Finker.mattsicker
FixFix to prevent Log4j 2.6.2 and higher from losing exceptions when a security manager is present. Fixes LOG4J2-1563. Thanks to Jason Tedor.ggregory
FixFixed issue where LogEvent.getContextStack() returned null. Fixes LOG4J2-1530.mikes
FixPrevent deadlock in Async Loggers when queue is full and logged Object's toString() logs another message. Fixes LOG4J2-1518. Thanks to Leon Finker.rpopma
FixPrevent ArrayIndexOutOfBoundsException in ParameterizedMessage.formatTo for single-char or empty messages. Fixes LOG4J2-1542. Thanks to Rogério Lecarião Leite.rpopma
FixFixed issue where AsyncLoggerContextSelector+PropertiesConfigurationBuilder defaulted to includeLocation=true. Fixes LOG4J2-1549. Thanks to Jason Bedard.mikes
FixPrevent SocketAppender memory usage from growing unbounded if it cannot connect to a server. Fixes LOG4J2-1562.ggregory
FixPrevent NPE in Level.isInRange. Fixes LOG4J2-1559. Thanks to Andrey Plotkin.ggregory
FixDynamicThresholdFilter filtered incorrectly when params were passed as individual arguments instead of varargs. Fixes LOG4J2-1511. Thanks to Srikanth Surukuntu.ggregory
Fix[CronTriggeringPolicy] ConfigurationScheduler scheduled the task infinitely after first fire. Fixes LOG4J2-1548.ggregory
FixLog4j should not unregister JMX MBeans when log4j2.disable.jmx property is true. Fixes LOG4J2-1506. Thanks to Johannes Schleger.ggregory
FixLog4j2 should postpone creating log file until the appender actually receives an event. Fixes LOG4J2-1490. Thanks to Krzysztof Taborski.ggregory
FixSupport loading custom plugins from jar files and directories whose classpath entries use the "vfs" URL protocol. Fixes LOG4J2-1320. Thanks to Paresh Varke, Pierrick Hymbert.ggregory
FixFix file handle resource leak in XmlConfiguration.XmlConfiguration(ConfigurationSource). Fixes LOG4J2-1541.ggregory
FixPrevent NPE when dynamically removing filters. Fixes LOG4J2-1538. Thanks to Igor Karpov.ggregory
FixAttributes were not merged properly in composite configurations. Fixes LOG4J2-1532.ggregory
FixAttributes were not merged properly in composite configurations. Fixes LOG4J2-1529. Thanks to Sridevi Narra.mattsicker
FixPrevent NPE in RingBufferLogEvent.getFormattedMessage() when used in web applications. Fixes LOG4J2-1527. Thanks to Jose Leon.rpopma
FixAdded ability to disable (date) lookup completely for compatibility with other libraries like Camel. Fixes LOG4J2-905. Thanks to Moritz Löser.ggregory
FixAdded support for setting StatusLogger destination in ConfigurationBuilder. Fixes LOG4J2-1526.mikes
FixAllow comma separated agents, host list to be passed to FlumeAppender. Fixes LOG4J2-1448. Thanks to Keith Laban.rpopma
FixMerging configurations failed with an NPE when comparing Nodes with different attributes. Fixes LOG4J2-1500. Thanks to Jose Leon.ggregory
FixFixed improper header in CsvParameterLayout. Fixes LOG4J2-1482. Thanks to Sumit Singhal.ggregory
FixDocumented that JVM Input Arguments Lookup (JMX) is not available on Google App Engine. Fixes LOG4J2-1199.rpopma
Fix(GC) Added method getParameter() to ObjectMessage (and ReusableObjectMessage). Fixes LOG4J2-1438.rpopma
Fix(GC) Fixed ISO8601 %date conversion pattern with a period '.' separator for milliseconds is now garbage free. Fixes LOG4J2-1488. Thanks to Richard Zschech.rpopma
Fix(GC) Fixed %date conversion patterns with a timezone parameter are now garbage free. Fixes LOG4J2-1489. Thanks to Richard Zschech.rpopma
FixPrevent NullPointerException in FastDateParser$TimeZoneStrategy. Fixes LOG4J2-1279. Thanks to Tony Baines.rpopma
Fix(GC) HighlightConverter and StyleConverter are now GC-free. Fixes LOG4J2-1341. Thanks to Richard Zschech.rpopma
Fix[OSGi] Fixed missing import package. Fixes LOG4J2-1467. Thanks to Ralf, Gary Gregory.rpopma, ggregory
Fix[OSGi] Fixed wrong Fragment-Host in manifest files. Fixes LOG4J2-351. Thanks to Roland Weiglhofer.rpopma, ggregory
FixProperties declared in configuration can now have their value either in the element body or in an attribute named "value". Fixes LOG4J2-1313. Thanks to Philipp Knobel.rpopma
Fixorg.apache.logging.log4j.core.appender.routing.IdlePurgePolicy was not working correctly. Fixes LOG4J2-1235. Thanks to Niranjan Rao, Sascha Scholz, Aleksey Zvolinsky.ggregory
FixFixed issue where CsvParameterLayout and CsvLogEventLayout inserted NUL characters if data starts with {, (, [ or ". Fixes LOG4J2-1502. Thanks to Sumit Singhal.ggregory
FixLayout is no longer optional. Fixes LOG4J2-1573. Thanks to Steffen Offermann.ggregory
FixServletAppender does not provide throwable object to ServletContext. Fixes LOG4J2-1608.ggregory
FixPrevent potential NPE in org.apache.logging.log4j.message.ParameterFormatter.formatMessage3(StringBuilder, char[], int, Object[], int, int[]). Fixes LOG4J2-1599.ggregory
FixPrevent potential NPE due to org.apache.logging.log4j.core.layout.MarkerPatternSelector.createSelector(PatternMatch[], String, boolean, boolean, Configuration). Fixes LOG4J2-1600.ggregory
FixPrevent potential NPE due to org.apache.logging.log4j.core.layout.ScriptPatternSelector.createSelector(AbstractScript, PatternMatch[], String, boolean, boolean, Configuration). Fixes LOG4J2-1601.ggregory
FixPrevent potential NPE in org.apache.logging.log4j.core.util.datetime.FormatCache.MultipartKey.equals(Object) when object is null. Fixes LOG4J2-1602.ggregory
FixRedo hashCode() and equals() methods in classes. Fixes LOG4J2-1603.ggregory
FixAdd targetNamespace to log4j-config.xsd. GitHub #43. Fixes LOG4J2-1610. Thanks to Shubhankar.ggregory
Fixnew Log4jLogEvent().toString() throws an NPE. Fixes LOG4J2-1619.ggregory
AddRoutingAppender can be configured with scripts. Add Script in a Routes element. Fixes LOG4J2-1578.ggregory
AddAdd a ScriptAppenderSelector to create an Appender specified by a Script. Fixes LOG4J2-1597.ggregory
Add(GC) Added support for garbage-free ThreadContext map. Disabled by default, users need to enable this explicitly. Fixes LOG4J2-1349.rpopma
Add(GC) Changed LogEvent's internal data structure for context data to be garbage-free. Added method LogEvent#getContextData(), deprecated method #getContextMap(). Fixes LOG4J2-1447.rpopma
AddUsers can now inject context data from other sources than ThreadContext. Values can be any Object, not just Strings. Fixes LOG4J2-1010. Thanks to Mikael Ståldal.rpopma
AddAdded support for java.util.concurrent.LinkedTransferQueue to AsyncAppender. Fixes LOG4J2-1568.mattsicker
AddAdded optional support for Conversant DisruptorBlockingQueue in AsyncAppender. Fixes LOG4J2-1430. Thanks to John Cairns.mattsicker
AddAdded optional support for JCTools MPSC bounded lock-free queue in AsyncAppender. Fixes LOG4J2-1439. Thanks to Anthony Maire.mattsicker
AddSocketAppender now supports IO buffering. Fixes LOG4J2-1558.ggregory
AddAdd a Builder for the SocketAppender (deprecates factory method). Fixes LOG4J2-1557.ggregory
AddAdd a Builder to ServletAppender and deprecate factory method. Fixes LOG4J2-1609.ggregory
AddAbstractManager now implements AutoCloseable. Fixes LOG4J2-1553.ggregory
AddAdded ability to generate Log4j 2-style XML configuration file from ConfigurationBuilder. Fixes LOG4J2-1528.mikes
AddAdded Logging API for Scala 2.10 and 2.11. Fixes LOG4J2-1181.mikes
AddAdded options to exclude stack trace from JSON, XML and YAML layouts. Fixes LOG4J2-1512.mikes
AddAdded Core API Configurator.shutdown(LoggerContext, long, TimeUnit). Fixes LOG4J2-1539.ggregory
AddFileAppender is now able to create files on-demand. Fixes LOG4J2-1501.ggregory
AddRollingFileAppender is now able to create files on-demand. Fixes LOG4J2-1504.ggregory
Add[PatternLayout] Add an ANSI option to %xThrowable. Fixes LOG4J2-1471.ggregory
Addorg.apache.logging.log4j.core.LoggerContext now implements Closeable. Fixes LOG4J2-1472.ggregory
Add[PatternLayout] Add an ANSI option to %message. Fixes LOG4J2-1458.ggregory
AddCreate a Builder for the FileAppender plugin to facilitate adding attributes in the future. Fixes LOG4J2-1505.ggregory
AddAllow Builders to be completely generic. Fixes LOG4J2-1507.ggregory
AddAllow a Builder to subclass another Builder. Fixes LOG4J2-1508.ggregory
AddAdd ThreadContextMap2 interface supporting method putAll(Map<String, String>). Fixes LOG4J2-1516. Thanks to Gary Gregory.rpopma
AddAdd ThreadContext.putAll(Map<String, String>). Fixes LOG4J2-1519.ggregory
AddAdd JUnit Rule implementations to manage the thread context. Fixes LOG4J2-1520.ggregory
AddThe Core AbstractConfiguration now tracks its LoggerContext and add Configuration.getLoggerContext(). Fixes LOG4J2-1547.ggregory
AddThe Core AbstractManager now tracks its LoggerContext. Fixes LOG4J2-1540.ggregory
AddAdd a Builder to the RoutingAppender and deprecate factory method. Fixes LOG4J2-1577.ggregory
UpdateLog4j2 TcpSocketServer in background. Fixes LOG4J2-1604. Thanks to Colin Hillman.ggregory
UpdateAllow the RollingFileAppender to use default pattern layout. Fixes LOG4J2-1574.ggregory
UpdateCustom Log4j threads now extend Log4jThread. Fixes LOG4J2-1556.ggregory
UpdateImprove error messages for TcpSocketServer and UdpSocketServer. Fixes LOG4J2-1605.ggregory
UpdateUpdated Jackson from 2.7.5 to 2.8.0. Fixes LOG4J2-1458.ggregory
UpdateUpdated Jackson from 2.8.0 to 2.8.1. Fixes LOG4J2-1494.ggregory
UpdateUpdated Jackson from 2.8.1 to 2.8.2. Fixes LOG4J2-1569.ggregory
UpdateUpdated Jackson from 2.8.2 to 2.8.3. Fixes LOG4J2-1598.ggregory
UpdateUpdated LMAX Disruptor from 3.3.4 to 3.3.5. Fixes LOG4J2-1495.ggregory
UpdateUpdated Kafka client from to Fixes LOG4J2-1496.ggregory
UpdateUpdated Kafka client from to Fixes LOG4J2-1533.ggregory
UpdateUpdated JMS test from ActiveMQ 5.13.3 to 5.13.4. Fixes LOG4J2-1487.ggregory
UpdateUpdated JMS test from ActiveMQ 5.13.4 to 5.14.0. Fixes LOG4J2-1551.ggregory
UpdateUpdate Apache Commons Compress from 1.12 to 1.13. Fixes LOG4J2-1757.ggregory
UpdateRemoved deprecated Core API org.apache.logging.log4j.core.util.Constants.UTF_8. Fixes LOG4J2-1543.ggregory
UpdateRemoved deprecated Core API org.apache.logging.log4j.core.util.Assert.requireNonNull(T, String). Fixes LOG4J2-1544.ggregory
UpdateRemoved deprecated Web API org.apache.logging.log4j.web.WebLookup.getServletContext(). Fixes LOG4J2-1545.ggregory

Release 2.6.2 – 2016-07-05

FixIf copy and delete fails in rename action then resort to truncating the source file after copying it. Fixes LOG4J2-904. Thanks to Bernhard Mähr.rgoers
FixCronTriggeringPolicy was not properly setting the prevFileTime value for the PatternProcessor so file dates and times on rolled files were incorrect. Fixes LOG4J2-1250.rgoers
FixFixed issue where reusable messages broke flow tracing logic. Fixes LOG4J2-1452. Thanks to Mikael Ståldal.rpopma
FixFix bug in OnStartupTriggeringPolicy that allowed it to roll over on every reconfiguration. Added minSize attribute. Fixes LOG4J2-1440.rgoers
FixFixed minor issues with the 2.6.1 web site. Fixes LOG4J2-1414. Thanks to Ralph Goers.rpopma
FixEnsure that the thread-local StringBuilders used by Layouts to format log events to text will not retain excessive memory after a large message was logged. Fixes LOG4J2-1434. Thanks to Luke Butters.rpopma
AddAdd "direct" option to ConsoleAppender for increased performance. Fixes LOG4J2-1395.mikes
FixProvide MessageFactory2 to custom Logger implementations. Fixes LOG4J2-1418.mikes
FixRollingRandomAccessFileManager was not properly rolling over on startup and was getting a NullPointerException. Fixes LOG4J2-1420.rgoers
FixFixed issue where Unbox utility ignored the value Constants.ENABLE_THREADLOCALS and always stored non-JDK classes in ThreadLocals. Fixes LOG4J2-1417.rpopma
FixFixed issue where AsyncAppenderQueueFullPolicyTest sometimes hangs. Fixes LOG4J2-1422.rpopma
FixOnStartupTriggeringPolicyTest fails on Windows saying the file is used by another process. Fixes LOG4J2-1445. Thanks to Ludovic HOCHET.ggregory
Add(GC) ObjectMessage and ReusableObjectMessage now avoid calling toString() on auto-boxed primitive parameters. Fixes LOG4J2-1437.rpopma
Add(GC) ParameterFormatter now avoids calling toString() on auto-boxed primitive message parameters. Fixes LOG4J2-1415.rpopma
AddUnbox utility's ringbuffer of StringBuilders is now configurable. Fixes LOG4J2-1412.rpopma
UpdateUpdate Jackson from 2.7.4 to 2.7.5. Fixes LOG4J2-1432.ggregory
UpdateUpdate Jansi from 1.11 to 1.13. Fixes LOG4J2-1433.ggregory
UpdateUpdate Apache Commons Compress from 1.11 to 1.12. Fixes LOG4J2-1444.ggregory

Release 2.6.1 – 2016-06-05

FixOnStartupTriggeringPolicy was forcing a rollover of empty files at startup and would append a second footer that was added by the prior shutdown. Fixes LOG4J2-1405.rgoers
FixFixed bug in ReusableParameterizedMessage where Throwable was never updated so first error was logged over and over again and subsequent errors were not logged. Fixes LOG4J2-1406. Thanks to Trask Stalnaker.rpopma
FixFixed ArrayIndexOutOfBoundsException that may occur in ReusableParameterizedMessage. Fixes LOG4J2-1409. Thanks to Shahan.rpopma
FixAdd filter and remove filter were not working properly in AbstractFilterable. Fixes LOG4J2-997. Thanks to Maytee Chinavanichkit.rgoers
FixChanged RenameAction to use java.nio to better report rename failures. Fixes LOG4J2-1032.rgoers
FixFixed misleading WARN log events from Log4j about message factories and unexpected formatting. Fixes LOG4J2-1407.ggregory
FixAdded the module log4j-liquibase to BOM POM. Fixes LOG4J2-1408.ggregory
FixLogger cache now accounts for message factory. Fixes LOG4J2-1180.ggregory
FixFix regression in properties configuration to support arbitrary component ids. Fixes LOG4J2-1402.rgoers
Update(GC) CSV layouts should not create a new CSVPrinter for each log event. Requires Apache Commons CSV 1.4. Fixes LOG4J2-1385.ggregory
UpdateUpdate liquibase-core from 3.4.2 to 3.5.1. Fixes LOG4J2-1398.ggregory
UpdateUpdate Apache Commons CSV from 1.3 to 1.4. Fixes LOG4J2-1399.ggregory
AddAdded documentation about plugin builders compared to factories. Fixes LOG4J2-1411.mattsicker
FixFixed minor issues with the 2.6 web site. Fixes LOG4J2-1394.mattsicker,mikes

Release 2.6 – 2016-05-25

Add(GC) Added support for garbage-free logging in steady state. This includes Async Loggers and logging synchronously to the console and to a file, but does not include the AsyncAppender. This release makes the GelfLayout and the main patterns in the PatternLayout garbage-free. Fixes LOG4J2-1270.rpopma
Add(GC) Added manual page on garbage-free logging. Fixes LOG4J2-1297.rpopma
Add(GC) Update Logger wrapper Generator tool to generate methods for the new Logger methods. Fixes LOG4J2-1373.rpopma
Update(GC) GelfLayout does now support garbage-free logging (with compressionType=OFF). Fixes LOG4J2-1356.mikes
Add(GC) Added methods to the Logger interface for logging CharSequence messages. Fixes LOG4J2-1326.rpopma
Add(GC) FileAppender, RollingFileAppender and MemoryMappedFileAppender are now also garbage-free by default. Fixes LOG4J2-1344.rpopma
Update(GC) ConsoleAppender is now garbage-free by default. This logic is reusable for all AbstractOutputStreamAppender subclasses. Fixes LOG4J2-1343.rpopma
Add(GC) Added unrolled varargs methods to Logger API, added Unbox utility to avoid auto-boxing when logging primitive values. Fixes LOG4J2-1278.rpopma
Update(GC) Avoid allocating unnecessary temporary objects in LoggerContext's getLogger methods. Fixes LOG4J2-1318.rpopma
Update(GC) Avoid allocating unnecessary temporary objects in MarkerManager's getMarker methods. Fixes LOG4J2-1333.rpopma
Update(GC) Avoid allocating unnecessary temporary objects in PatternLayout's NamePatternConverter and ClassNamePatternConverter. Fixes LOG4J2-1321.rpopma
Add(GC) Add MessageFactory that avoid allocation by reusing a cached ParameterizedMessage instance. Fixes LOG4J2-1271.rpopma
Update(GC) ParameterizedMessage optimizations to avoid or at least postpone allocating temporary objects. Fixes LOG4J2-1271.rpopma
Update(GC) Provide ThreadLocal-based gc-free caching mechanism in DatePatternConverter for non-webapps. Fixes LOG4J2-1283.rpopma
Add(GC) Add interface StringBuilderFormattable to enable converting Messages and parameters to text without allocating temporary objects. ParameterizedMessage, ObjectMessage, SimpleMessage and ThreadDumpMessage now implement StringBuilderFormattable. Fixes LOG4J2-1293.rpopma
Update(GC) Update PatternLayout to utilize gc-free mechanism for LogEvent processing. Fixes LOG4J2-1291.rpopma
Update(GC) Update RandomAccessFileAppender and RollingRandomAccessFileAppender to utilize gc-free Layout.encode() method. Fixes LOG4J2-1292.rpopma
Add(GC) Add encode(LogEvent, ByteBufferDestination) method to Layout API to enable converting LogEvents to bytes without creating temporary objects. Fixes LOG4J2-1274.rpopma
Fix(GC) LoggerConfig.getProperties() should not allocate on each call. Fixes LOG4J2-1281.rpopma
Update(GC) Improve LoggerConfig's data structure for AppenderControl objects to avoid allocating temporary objects during traversal for each log event. Fixes LOG4J2-1272.rpopma
Fix(GC) AsyncLogger should use thread-local translator by default. Fixes LOG4J2-1269.rpopma
FixGenerate MDC properties as a JSON map in JSONLayout, with option to output as list of map entries. Fixes LOG4J2-623.rpopma
AddAdded a YAML layout. Fixes LOG4J2-1362. Thanks to Gary Gregory.rpopma
FixFixed memory leak related to shutdown hook. Fixes LOG4J2-1387.rpopma
AddDocumented benchmark results comparing Log4j 2 performance to other logging libraries. Fixes LOG4J2-1179.rpopma
FixCopying a MutableLogEvent using Log4jLogEvent.Builder should not unnecessarily obtain caller location information. Fixes LOG4J2-1382.rpopma
AddDocument dependencies for layouts. Fixes LOG4J2-1011.mikes
AddPattern to drop first N package parts. Fixes LOG4J2-621. Thanks to Lee Theobald, Kamal Mettananda, Gary Gregory.ggregory
AddSupport merging configurations to for a composite configuration. Fixes LOG4J2-494. Thanks to Philipp Knobel.rgoers
AddOption to not log stack traces for logged Throwables in GelfLayout. Fixes LOG4J2-1357.mikes
UpdateUpdate SLF4J from 1.7.13 to 1.7.21. Fixes LOG4J2-1375.rpopma
UpdateMigrate tests from Logback 1.1.3 to 1.1.7. Fixes LOG4J2-1374.rpopma
UpdateUpdate Apache Commons CSV from 1.2 to 1.3. Fixes LOG4J2-1384.ggregory
FixXMLLayout indents, but not the first child tag (Event). Fixes LOG4J2-1372. Thanks to Kamal Mettananda, Gary Gregory.rgoers
FixProperties Configuration did not support includeLocation attribute on Loggers. Fixes LOG4J2-1363.rgoers
FixThe ConfigurationSource was not saved for BuiltConfigurations so monitor interval had no effect. Fixes LOG4J2-1263.rgoers
Fix"xz" compression results in plaintext, uncompressed files. Fixes LOG4J2-1369. Thanks to Alex Birch, Gary Gregory.ggregory
Update(Log4j-internal) Provide message text as CharSequence for some message types to optimize some layouts. Fixes LOG4J2-1365.mikes
Fix(Log4j-internal) StatusLogger dropped exceptions when logging parameterized messages. Fixes LOG4J2-1368.rpopma
AddAdd an AutoCloseable ThreadContext class: CloseableThreadContext. Fixes LOG4J2-1348. Thanks to Greg Thomas, Gary Gregory.ggregory
Update(Doc) Clarify documentation for properties that control Log4j behaviour. Fixes LOG4J2-1345.rpopma
FixLoggerFactory in 1.2 API module is not compatible with 1.2. Fixes LOG4J2-1336. Thanks to Zbynek Vyskovsky.ggregory
FixNo configuration reload is triggered under Windows when replacing the configuration file with one that has older last modified date. Fixes LOG4J2-1354. Thanks to Arkadiusz Adolph.ggregory
FixException from Log4jServletContextListener prevents jetty-maven-plugin run-forked. Fixes LOG4J2-1346.
Fix(Perf) AsyncLogger performance optimization: avoid calling instanceof TimestampMessage in hot path. Fixes LOG4J2-1339.rpopma
FixImprove error handling in the Async Logger background thread: the new default exception handler no longer rethrows the error. Fixes LOG4J2-1324.rpopma
FixConfiguration file error does not show cause exception. Fixes LOG4J2-1309.ggregory
AddAdd pattern converter for thread id and priority in PatternLayout. Fixes LOG4J2-1299.ggregory
FixChange flow logging text from "entry' to "Enter" and "exit" to "Exit". Fixes LOG4J2-1289.ggregory
FixMade default MessageFactory configurable. Fixes LOG4J2-1284.rpopma
FixDeprecate org.apache.logging.log4j.util.MessageSupplier. Fixes LOG4J2-1280.ggregory
FixLogger methods taking Supplier parameters now correctly handle cases where the supplied value is a Message. Fixes LOG4J2-1280.rpopma
FixFixedDateFormat was incorrect for formats having MMM with the French locale. Fixes LOG4J2-1268.rpopma
UpdateAdd enhanced entry and exit methods. Fixes LOG4J2-1255.rgoers
AddAdd shutdown methods to LogManager. Fixes LOG4J2-124.rgoers
FixCreation of a LoggerContext will fail if shutdown is in progress. LogManager will default to SimpleLogger instead. Fixes LOG4J2-1222.rgoers
AddAdded async logger Timeout wait strategy and made this the default wait strategy for async loggers. This prevents a rare deadlock that may occur on Solaris. Fixes LOG4J2-1221. Thanks to Michael Barker.rpopma
AddAdded option to discard events below a certain log level if the async logger ring buffer or async appender queue is full. Fixes LOG4J2-1080.rpopma
AddMake PatternLayout header and footer accept a pattern. Fixes LOG4J2-1237. Thanks to Mike Calmus, Gary Gregory.ggregory
AddMake header and footer values customizable in JSONLayout. Fixes LOG4J2-1244. Thanks to Anshu Garg, Remko Popma, Gary Gregory.ggregory
AddMake CSV Layout header and footers accept patterns. Fixes LOG4J2-1245.ggregory
AddDynamic Subject for SMTP Appender. Fixes LOG4J2-1192. Thanks to Jörg Bretschneider, Gary Gregory.ggregory
AddFormattedMessage, MessageFormatMessage and StringFormattedMessage should support passing in a Locale to ensure appropriate formatting. Fixes LOG4J2-1277. Thanks to Gary Gregory, Ludovic Hochet.ggregory
FixTlsSyslogFrame calculates message length incorrectly. Fixes LOG4J2-1260. Thanks to Blake Day, Gary Gregory.ggregory
FixAsync DynamicThresholdFilter does not use the log event's context map. Fixes LOG4J2-1258. Thanks to Francis Lalonde.ggregory
FixIncorrect log rotation in last week of year. Fixes LOG4J2-1232. Thanks to Nikolai.ggregory
FixFixed broken nanotime in pattern layout. Fixes LOG4J2-1248.rpopma
FixJSONLayout doesn't add a comma between log events. Fixes LOG4J2-908. Thanks to Konstantinos Liakos, Patrick Flaherty, Robin Coe, Gary Gregory.ggregory
FixDon't concatenate SYSLOG Messages. Fixes LOG4J2-1230. Thanks to Vladimir Hudec, Ralph Goers, Gary Gregory.ggregory and other classes does not report internal exceptions to the status logger. Fixes LOG4J2-1238.ggregory
FixFix documentation to specify the correct default wait strategy used by async loggers. Fixes LOG4J2-1212.rpopma
FixDocumentation/XSD inconsistencies. Fixes LOG4J2-1215. Thanks to Erik Kemperman.ggregory
FixLoggerMessageSupplierTest and LoggerSupplierTest are Locale sensitive. Fixes LOG4J2-1276. Thanks to Ludovic Hochet.ggregory
UpdateUpdate Jackson from 2.7.3 to 2.7.4. Fixes LOG4J2-1380.ggregory
UpdateUpdate Jackson from 2.7.0 to 2.7.2. Fixes LOG4J2-1304.ggregory
UpdateUpdate LMAX Disruptor from 3.3.2 to 3.3.4. Fixes LOG4J2-1253.ggregory
UpdateUpdate SLF4J from 1.7.12 to 1.7.13. Fixes LOG4J2-1219.ggregory
UpdateUpdate Jackson from 2.6.3 to 2.6.4. Fixes LOG4J2-1239.ggregory
UpdateUpdate Jackson from 2.6.4 to 2.7.0. Fixes LOG4J2-1249.ggregory
UpdateUpdate Jackson from 2.7.2 to 2.7.3. Fixes LOG4J2-1351.ggregory
UpdateUpdate Liquibase from 3.3.5 to 3.4.2. Fixes LOG4J2-1240.ggregory
UpdateUpdate Kafka client from to Fixes LOG4J2-1294.ggregory
UpdateUpdate javax.mail from 1.5.4 to 1.5.5. Fixes LOG4J2-1352.ggregory
UpdateUpdate Apache Commons Compress from 1.10 to 1.11. Fixes LOG4J2-1358.ggregory
UpdateUpdate Google java-allocation-instrumenter from 3.0 to 3.0.1. Fixes LOG4J2-1388.rpopma
UpdateMisleading Value In Properties Example. Fixes LOG4J2-1233. Thanks to Bahri Gencsoy.ggregory
FixFix JUL bridge issue where LogRecord.getParameters() is used when null. Fixes LOG4J2-1251. Thanks to Romain Manni-Bucau.mattsicker
FixFix typo in Flow Tracing documentation. Fixes LOG4J2-1254. Thanks to Josh Trow.rpopma
FixClassNotFoundException for BundleContextSelector when initialising in an OSGi environment. Fixes LOG4J2-920. Thanks to Ludovic Hochet.mattsicker
UpdateRemove serializability from classes that don't need it. Fixes LOG4J2-1300.mattsicker
AddAdd documentation links to runtime dependencies in each component intro page. Fixes LOG4J2-1303.mattsicker
FixFix RollingAppenderNoUnconditionalDeleteTest repeat test runs from failing. Fixes LOG4J2-1275. Thanks to Ludovic Hochet.mattsicker
FixStop throwing unnecessary exception in Log4jServletContextListener.contextDestroyed(). Fixes LOG4J2-1262.mattsicker
AddJeroMqAppender should support layouts. Fixes LOG4J2-1252.mattsicker
FixNullPointerException in MapLookup.lookup if the event is null. Fixes LOG4J2-1227. Thanks to Olivier Lemasle.mattsicker
UpdateJeroMqAppender should use ShutdownCallbackRegistry instead of runtime hooks. Fixes LOG4J2-1306.mattsicker
AddPatternLayout option to limit length of text. Fixes LOG4J2-1217. Thanks to Thies Wellpott.mattsicker
UpdateRemove need to pre-specify appender et al. identifiers in property file config format. Fixes LOG4J2-1308.mattsicker
FixAdd a Log4jLookup class to help write log files relative to log4j2.xml. Fixes LOG4J2-1050. Thanks to Adam Retter.mattsicker
AddAdd JNDI lookup documentation. Fixes LOG4J2-1133.mattsicker
FixJndiLookup mindlessly casts to String and should use String.valueOf(). Fixes LOG4J2-1310.mattsicker
Updateorg.apache.logging.log4j.core.LoggerContext#updateLoggers should call firePropertyChangeEvent. Fixes LOG4J2-1206.mattsicker
FixLog4jWebInitializerImpl: Use Thread instead of Class for fallback classloader. Fixes LOG4J2-248.mattsicker
AddPatternLayout: Possible variable substitution in equals substitution parameter. Fixes LOG4J2-1169. Thanks to Gerald Kritzinger.mattsicker
UpdateUpdate Log4j 1.x migration guide to include information about system property lookup syntax changes. Fixes LOG4J2-1322.mattsicker
FixFix NoClassDefFoundError in ReflectionUtil on Google App Engine. Fixes LOG4J2-1330.mattsicker

Release 2.5 – 2015-12-06

FixReduced memory usage of status messages in bounded queue; support zero-length queue that stores no messages. Fixes LOG4J2-324.rpopma
FixFixed rollover error when copying to a directory mapped to a remote Linux host. Fixes LOG4J2-1173.rpopma
AddAdded support for custom delete actions triggered by a rollover. Fixes LOG4J2-435. Thanks to Robert Schaft.rpopma
UpdateAdd PurgePolicy and IdlePurgePolicy to RoutingAppender. Fixes LOG4J2-649. Thanks to Aleksey Zvolinsky.rgoers
UpdateRemove ConfigurationMonitor. The WatchManager is now used to check for configuration changes. Fixes LOG4J2-1202.rgoers
FixMake KafkaAppender support SerializedLayout. Fixes LOG4J2-1195. Thanks to Melvin Du.mikes
AddAllow rollover to occur at any time. Add CronTriggeringPolicy. Fixes LOG4J2-89.rgoers
FixAllow triggering policy and rollover strategy to be modified during reconfiguration. Fixes LOG4J2-381. Thanks to Anthony Baldocchi.rgoers
AddAdd support for JSR 223 scripts in filters and the PatternSelector. Fixes LOG4J2-1136.rgoers
AddAdd getters for source and destination file in file rename action. Fixes LOG4J2-1168. Thanks to Steven Swor.ggregory
AddAdd getters for classes in org.apache.logging.log4j.core.appender.rolling.action. Fixes LOG4J2-1175.ggregory
AddAdded system property to allow users to control whether messages should be formatted in the background. Fixes LOG4J2-898.rpopma
AddSupport use-case for JDBC's CommonDataSource.setLogWriter(PrintWriter) and java.sql.DriverManager.setLogWriter(PrintWriter). Fixes LOG4J2-1178.ggregory
AddSupport use case for java.sql.DriverManager.setLogStream(PrintStream). Fixes LOG4J2-1187.ggregory
FixPerformance improvement when gathering location information. Fixes LOG4J2-1029. Thanks to Stefan Leonhartsberger.rpopma
FixFixed ThreadLocal leak [AsyncLogger$Info] on Tomcat when using AsyncLoggerContextSelector. Fixes LOG4J2-1172.rpopma
FixFixed memory leak when log4j jars are in Tomcat's lib folder. Fixes LOG4J2-1176.rpopma
FixLogger cache does not account for message factory. Fixes LOG4J2-1180. Thanks to Mikael Ståldal.ggregory
FixDocumentation: fixed minor issues with the site and manual pages. Fixes LOG4J2-879.rpopma
FixRollingFileAppender should also roll over when log event time is equal to rollover time, not only when later. Fixes LOG4J2-999. Thanks to Joan Balagueró.rpopma
FixFixed bug where omitting the <display-name> element in web.xml caused incorrect log4j initialization, resulting in memory leaks when the web application was stopped or reloaded. Fixes LOG4J2-873. Thanks to Martin Dickins, LC, Luke Woodward.rpopma
FixBetter web app support for async loggers: Fixed a memory leak that occurred when the logging jars are placed in the container's classpath and the configuration file uses AsyncRoot/AsyncLogger. The problem was that the first web application started the Disruptor background thread [AsyncLoggerConfig-1] but did not stop it until all web apps are stopped. Each web application now has its own Disruptor which is stopped/started together with the web app. Fixes LOG4J2-323.rpopma
FixBetter web app support for async loggers: it is now possible to place the logging jars in the container's classpath when making all loggers asynchronous by using AsyncLoggerContextSelector. This fixes a problem where logging would stop working after stopping and restarting a web application. Fixes LOG4J2-493.rpopma
FixUse servlet context name for logger context name when available. Fixes LOG4J2-1171.rpopma
FixFixed a ThreadLocal memory leak in Tomcat8 that mentions AsyncLoggers when Async Loggers are not used. Fixes LOG4J2-1159.rpopma
FixAbstractConfiguration executor should use a DaemonThreadFactory. Fixes LOG4J2-1166.rpopma
FixImprove Log4j initialization status messages. Fixes LOG4J2-1165.rpopma
FixWeb site corrections and updates. Fixes LOG4J2-1156.rpopma
FixLog4J JUL adapter is using MessageFormat on String passed by java.util.function.Supplier<String>. Fixes LOG4J2-1158. Thanks to Michael Fortin, Gary Gregory.ggregory
Fixorg.apache.logging.log4j.core.Logger should be serializable. Fixes LOG4J2-801.mattsicker
FixFix compilation error for classes annotated with @Plugin. Fixes LOG4J2-1157. Thanks to Norbert Bartels.mattsicker
FixFix plugin documentation error about Converters. Fixes LOG4J2-948. Thanks to Andrew Flower.mattsicker
FixPrefix all thread names Log4j creates with "Log4j2-". Fixes LOG4J2-1193.ggregory
FixDocumentation does not match parameters for LoggerNameLevelRewritePolicy. Fixes LOG4J2-1194. Thanks to Adam Brin.ggregory
FixMongoDbConnection does not close MongoClient. Fixes LOG4J2-1196. Thanks to René Zanner.mattsicker
UpdateUpdate Jackson from 2.6.2 to 2.6.3. Fixes LOG4J2-1174.ggregory
UpdateUpdate kafka-clients from to Fixes LOG4J2-1207.ggregory

Release 2.4.1 – 2015-10-08

AddAllow PatternLayout to select a pattern to use based on some selection criteria. Fixes LOG4J2-1129.rgoers
AddAdd %equals to PatternLayout to test and replace patterns with strings. Fixes LOG4J2-1145.ggregory
AddAdd %equalsIgnoreCase to PatternLayout to test and replace patterns with strings. Fixes LOG4J2-1147.ggregory
AddAdd %notEmpty to PatternLayout to avoid output of patterns where all variables are empty. Fixes LOG4J2-1146.ggregory
AddAdd possibility to set shutdown timeout on AsyncAppender. Fixes LOG4J2-1020.mikes
FixFixed NullPointerException when only root logger is defined (and no named loggers) in configuration properties file. Fixes LOG4J2-1153.rpopma
FixFixed bug where headers were not being written to first file with RollingFileAppender. Fixes LOG4J2-1140.rpopma
FixFixed bug where PatternLayout predefined date pattern with time zone always renders default date format. Fixes LOG4J2-1149.rpopma
FixFixed Log4jLookup. Fixes LOG4J2-1050.rpopma
FixFix potential memory leak in web applications by using a straight ThreadLocal field instead of subclassing ThreadLocal. Fixes LOG4J2-1142.rpopma
FixCompression on rollover was broken: log file was renamed to .zip but not compressed. Fixes LOG4J2-1135.rpopma
Fixlog4j2.xml cannot be parsed on Oracle Weblogic 12c. Fixes LOG4J2-1127.ggregory
FixDo not use MongoDB driver 2.13.3 deprecated methods. Fixes LOG4J2-1132.ggregory
FixAdd %markerSimpleName in pattern layout should evaluate to marker name (not toString()). Fixes LOG4J2-1144.ggregory
FixWeb site corrections and updates. Fixes LOG4J2-1126.ggregory
UpdatePerformance improvement: backport Java 8 fast ISO-8859-1 String to byte[] encoder to AbstractStringLayout. Fixes LOG4J2-1151.rpopma
UpdatePerformance improvement when converting Strings to byte[] arrays. Fixes LOG4J2-935.rpopma
UpdateUpdate MongoDB driver from 2.13.3 to 3.0.4. Fixes LOG4J2-1040.ggregory
UpdateReuse StringBuilder to improve performance for String-based layouts: CSV, GELF, HTML, RFC524, Syslog. Fixes LOG4J2-1128.ggregory
UpdateUpdate mongo-java-driver from 2.13.2 to 2.13.3. Fixes LOG4J2-1131.ggregory
UpdateDo not use Jackson deprecated methods. Fixes LOG4J2-1138.ggregory
UpdateUpdate Jackson from 2.6.1 to 2.6.2. Fixes LOG4J2-1139.ggregory
UpdateUpdate kafka-clients from to Fixes LOG4J2-1150.ggregory

Release 2.4 – 2015-09-20

AddAdd support for configuration via Properties. Fixes LOG4J2-635.rgoers
AddAdd ConfigurationBuilder for programmatic configuration. Fixes LOG4J2-952.rgoers
UpdateUpdate Java platform from Java 6 to 7. From this version onwards, log4j 2 requires Java 7. Fixes LOG4J2-1017.ggregory
AddAdded support for Java 8 lambda expressions to lazily construct a log message only if the requested log level is enabled. Fixes LOG4J2-599.rpopma
AddUpdated Logger wrapper generator tool to add Java 8 lambda support for custom log levels. Fixes LOG4J2-1118.rpopma
AddNew Appender for Apache Kafka. Fixes LOG4J2-1107. Thanks to Mikael Ståldal.ggregory
AddNew publisher Appender for ZeroMQ (using JeroMQ). Fixes LOG4J2-1113. Thanks to Gary Gregory.ggregory
AddAdd Comma Separated Value (CSV) layouts for parameter and event logging. Fixes LOG4J2-1088. Thanks to Gary Gregory.ggregory
UpdatePatternLayout timestamp formatting performance improvement: replaced synchronized SimpleDateFormat with Apache Commons FastDateFormat. This and better caching resulted in a ~3-30X faster timestamp formatting. Fixes LOG4J2-812.rgoers
UpdatePatternLayout timestamp formatting performance improvement: predefined date formats (and variants using a period '.' millisecond separator instead of ',') are now formatted ~2-10X faster than other date formats. Fixes LOG4J2-1097.rpopma
UpdateImproved performance of ParameterizedMessage::getFormattedMessage by ~2X. Fixes LOG4J2-1096.rpopma
UpdateLoggerConfig performance improvements: avoid unnecessary lock acquisition, use more efficient data structure. Fixes LOG4J2-1120.rpopma
UpdatePatternLayout performance improvement by caching and reusing a ThreadLocal StringBuilder. Fixes LOG4J2-1125.rpopma
FixFixed potential race condition on reconfiguration. Introduced ReliabilityStrategy to facilitate switching between different mechanisms for preventing log events from being dropped on reconfiguration. Fixes LOG4J2-1121.rpopma
UpdateAdd thread name to status logger layout. Fixes LOG4J2-1114.ggregory
FixCore Configurator.initialize(String, ClassLoader, String) fails to work when config location is a file path. Fixes LOG4J2-1123.ggregory
FixOutputStreamManager in ConsoleAppender leaking managers. Fixes LOG4J2-1117. Thanks to Marcus Thiesen.ggregory
FixWrite pending events to Flume when the appender is stopped. Fixes LOG4J2-1044.rgoers
FixNullPointerException when passing null to java.util.logging.Logger.setLevel(). Fixes LOG4J2-1108. Thanks to Mikael Ståldal.ggregory
Fixorg.apache.logging.log4j.jul.CoreLogger.setLevel() checks for security permission too late. Fixes LOG4J2-1110.ggregory
RemoveRemoved experimental interface LevelLogger which got committed to master by mistake.rpopma
UpdatePass log event when interpolating logger properties. Fixes LOG4J2-1010.rgoers
AddAdd Core Configurator APIs to change a logger's level. Fixes LOG4J2-1090.ggregory
AddAdd API org.apache.logging.log4j.Level.isInRange(Level, Level). Fixes LOG4J2-1105. Thanks to Gary Gregory.ggregory
AddAdd a LevelRangeFilter class. Fixes LOG4J2-1106. Thanks to Gary Gregory.ggregory
AddAdded support for system nanosecond time in pattern layout. Fixes LOG4J2-1074.rpopma
AddAdded support for compressing to bzip2 format on file rollover. Fixes LOG4J2-1075.rpopma
AddSupport additional Apache Commons Compress compression formats on rollover: Deflate, Pack200, XY. Fixes LOG4J2-1077.ggregory
AddNew module for Liquibase integration. Fixes LOG4J2-767. Thanks to Mikael Ståldal.ggregory
AddNew RewritePolicy for changing level of a log event. Fixes LOG4J2-1023. Thanks to Mikael Ståldal.ggregory
AddAdd a way to route messages based on the %marker in Layout for RoutingAppender. Fixes LOG4J2-1015. Thanks to Daniel Marcotte.ggregory
AddAdd a Log4jLookup class to help write log files relative to log4j2.xml. Fixes LOG4J2-1050. Thanks to Adam Retter.ggregory
AddAdd API org.apache.logging.log4j.LogManager.getFormatterLogger(). Fixes LOG4J2-1057.ggregory
AddExpose Log4jContextFactory's ShutdownCallbackRegistry. Fixes LOG4J2-1066. Thanks to Charles Allen.ggregory
FixMisleading StatusLogger WARN event in LogManager with java.util.Map. Fixes LOG4J2-1084. Thanks to Philipp Schneider.ggregory
FixNoClassDefFoundError when starting app on Google App Engine. Fixes LOG4J2-1051. Thanks to Lukasz Lenart.ggregory
FixExtendedThrowablePatternConverter does not print suppressed exceptions. Fixes LOG4J2-684. Thanks to Joern Huxhorn, Mauro Molinari.ggregory
FixImproper handling of JSON escape chars when deserializing JSON log events. Fixes LOG4J2-1069. Thanks to Sam Braam.ggregory
FixExceptions not logged when using TcpSocketServer + SerializedLayout. Fixes LOG4J2-1068. Thanks to Andy McMullan.ggregory
FixThrowableProxy getExtendedStackTraceAsString throws NPE on deserialized nested exceptions. Fixes LOG4J2-1067. Thanks to Sam Braam.ggregory
FixAsyncAppender now resets the thread interrupted flag after catching InterruptedException. Fixes LOG4J2-1049. Thanks to Robert Schaft.rpopma
FixFileConfigurationMonitor unnecessarily calls System.currentTimeMillis() causing high CPU usage. Fixes LOG4J2-1048. Thanks to Nikhil.rpopma
FixBackward compatibility issue in log4j-1.2-api NDC pop() and peek(). Fixes LOG4J2-1037. Thanks to Marc Dergacz.ggregory
FixCustom java.util.logging.Level gives null Log4j Level and causes NPE. Fixes LOG4J2-1025. Thanks to Mikael Ståldal.ggregory
FixSimpleLogger creates unnecessary Map objects by calling ThreadContext.getContext() instead of getImmutableContext(). Fixes LOG4J2-1033. Thanks to Mikael Ståldal.ggregory
FixHighlightConverter does not obey noConsoleNoAnsi. Fixes LOG4J2-1026.ggregory
FixZipCompressAction leaves files open until GC when an IO error takes place. Fixes LOG4J2-1019.ggregory
FixGzCompressAction leaves files open until GC when an IO error takes place. Fixes LOG4J2-1020.ggregory
FixIncorrect documentation for layout default charset. Fixes LOG4J2-1038. Thanks to Gili.ggregory
FixSocket and Syslog appenders don't take timeout into account at startup. Fixes LOG4J2-1042. Thanks to Guillaume Turri.ggregory
FixCircular suppressed Exception throws StackOverflowError. Fixes LOG4J2-934. Thanks to Kenneth Gendron.ggregory
FixCircular Exception cause throws StackOverflowError. Fixes LOG4J2-1046. Thanks to Kenneth Gendron.ggregory
FixUse System.nanoTime() to measure time intervals. Fixes LOG4J2-982. Thanks to Mikhail Mazurskiy.ggregory
FixExternalize log4j2.xml via URL resource. Fixes LOG4J2-1045. Thanks to Günter Albrecht.ggregory
FixLog4jMarker#contains(String) does not respect org.slf4j.Marker contract. Fixes LOG4J2-1058. Thanks to Daniel Branzea.ggregory
FixLog4jMarker#contains(Marker) does not respect org.slf4j.Marker contract. Fixes LOG4J2-1060.ggregory
FixLog4jMarker#remove(Marker) does not respect org.slf4j.Marker contract. Fixes LOG4J2-1061.ggregory
FixLog4jMarker#add(Marker) does not respect org.slf4j.Marker contract. Fixes LOG4J2-1062.ggregory
Fixorg.apache.logging.slf4j.Log4jMarker does not implement org.slf4j.Marker.equals(Object) org.slf4j.Marker.hashCode(). Fixes LOG4J2-1064.ggregory
FixHeader in layout should not be written on application startup if appending to an existing file. Fixes LOG4J2-1030. Fixes LOG4J2-889. Thanks to Maciej Karaś, Kenneth Leider.rpopma
FixClarify documentation for combining async with sync loggers. Fixes LOG4J2-918.rpopma
FixGelfLayout throws exception if some log event fields are null. Fixes LOG4J2-1078. Thanks to Mikael Ståldal.ggregory
UpdateSupport batchSize in FlumeAvroManager. Fixes LOG4J2-1044.rgoers
UpdateDefine org.apache.logging.log4j.Marker.equals(Object) and org.apache.logging.log4j.Marker.hashCode(). Fixes LOG4J2-1065.ggregory
UpdateAvoid creating temporary array object in org.apache.logging.slf4j.Log4jMarker.iterator(). Fixes LOG4J2-1063.ggregory
Updatelog4j-web-2.1 should workaround a bug in JBOSS EAP 6.2. Fixes LOG4J2-890. Thanks to Hassan Kalaldeh, Robert Andersson, Remko Popma.ggregory
UpdateMongoDB appender, username and password should be optional. Fixes LOG4J2-403. Thanks to Poorna Subhash P, Jeremy Lautman.ggregory
UpdateLog4j2 tries to SystemClassLoader when running on Google AppEngine. Fixes LOG4J2-1035.ggregory
UpdateAllow a list of keys to be specified in the MDC pattern converter. Fixes LOG4J2-1022.rgoers
UpdateFix FindBugs DM_DEFAULT_ENCODING bug in SimpleLogger.logMessage() and simplify code. Fixes LOG4J2-959.ggregory
UpdateUpdate Apache Flume from 1.5.2 to 1.6.0. Fixes LOG4J2-1036.ggregory
UpdateUpdate MongoDB driver from 2.11.2 to 2.13.2. Fixes LOG4J2-1041.ggregory
UpdateUpdate database tests from H2 1.3.175 to 1.3.176. Fixes LOG4J2-1018.ggregory
UpdateUpdate Java Mail from 1.5.2 to 1.5.4. Fixes LOG4J2-1070.ggregory
UpdateUpdate Jackson from 2.5.3 to 2.5.4. Fixes LOG4J2-1079.ggregory
UpdateUpdate Jackson from 2.5.4 to 2.6.0. Fixes LOG4J2-1879.ggregory
UpdateUpdate Jackson from 2.6.0 to 2.6.1. Fixes LOG4J2-1092.ggregory
UpdateUpdate Apache Commons Compress from 1.9 to 1.10. Fixes LOG4J2-1104.ggregory

Release 2.3 – 2015-05-09

FixIncorrectly defined compressionType parameter to GelfLayout. Fixes LOG4J2-1009. Thanks to Mikael Ståldal.ggregory
Fixorg.apache.logging.log4j.core.config.plugins.util.ResolverUtil.extractPath(URL) incorrectly converts '+' characters to spaces. Fixes LOG4J2-1008. Thanks to Ralph Goers, Gary Gregory.ggregory
Fixorg.apache.logging.log4j.core.util#fileFromUri(URI uri) incorrectly converts '+' characters to spaces. Fixes LOG4J2-1007. Thanks to Ralph Goers, Gary Gregory.ggregory
FixJUL Logger.throwing is mis-mapped to ERROR when it should be TRACE. Fixes LOG4J2-1003. Thanks to Dan Armbrust.ggregory
FixSystem.out no longer works after the Console appender and JANSI are initialized. Fixes LOG4J2-965. Thanks to Khotyn Huang.ggregory
UpdateMake org.apache.logging.log4j.core.Logger#updateConfiguration protected. Fixes LOG4J2-998. Thanks to Mariano Gonzalez.ggregory
UpdateMove UTF-8 constant from Charsets to Constants class. Remove Charsets class. Fixes LOG4J2-995.rgoers
FixDeadlock would occur if appender thread creates a new Logger during reconfiguration. Fixes LOG4J2-993.rgoers
FixAsync root logger config should default includeLocation to false. Fixes LOG4J2-991. Thanks to Ryan Rupp.rpopma
FixAbstractFilter should not implement equals() and hashCode(). Fixes LOG4J2-985. Thanks to Sean Dawson.rpopma
AddPatternLayout %highlight to support noConsoleNoAnsi like %style. Fixes LOG4J2-984. Thanks to Jonas Höpfner.ggregory
AddTruncate from the end of text format modifier. Fixes LOG4J2-926. Thanks to David Ohana.ggregory
FixNumerical overflow in BurstFilter not handled correctly. Fixes LOG4J2-980. Thanks to Mikhail Mazurskiy.ggregory
FixIncorrect unlock in ProviderUtil. Fixes LOG4J2-981. Thanks to Mikhail Mazurskiy.ggregory
FixKeyStoreConfiguration.createKeyStoreConfiguration() ignores keyManagerFactoryAlgorithm. Fixes LOG4J2-966.ggregory
FixUsing monitorInterval with YAML config file format causes JSONParseException. Fixes LOG4J2-976. Thanks to Matt Quinn.ggregory
FixStringFormattedMessage serialization is incorrect. Fixes LOG4J2-964. Thanks to Jonne Jyrylä.ggregory
FixA new StatusLoggerAdmin listener is added to StatusLogger every time the log is reconfigured. Fixes LOG4J2-947. Thanks to Stefan Wehner.ggregory
FixSyslogLayout contains extra space. Fixes LOG4J2-968. Thanks to Paul D Johe.ggregory not read for all properties. Fixes LOG4J2-967. Thanks to Stefan Wehner.ggregory
FixAnother bad priority in Syslog messages. Fixes LOG4J2-971. Thanks to Paul D Johe.ggregory does not need to create temp Integer objects. Fixes LOG4J2-972.ggregory
FixTypo in EventLogger documentation. Fixes LOG4J2-974. Thanks to Daniel Galán y Martins.ggregory
UpdateUpdate LMAX Disruptor from 3.3.0 to 3.3.2. Fixes LOG4J2-988.ggregory
UpdateMigrate tests from Logback 1.1.2 to 1.1.3. Fixes LOG4J2-987.ggregory
UpdateUpdate tests to use ActiveMQ from 5.10 to 5.11.1. Fixes LOG4J2-988.ggregory
UpdateUpdate Jackson from 2.5.1 to 2.5.3. Fixes LOG4J2-1004.ggregory
UpdateUpdate Slf4j from 1.7.7 to 1.7.12. Fixes LOG4J2-1005.ggregory

Release 2.2 – 2015-02-22

Fix(JMX) To avoid memory leaks when web applications are restarted, JMX notifications are sent from the caller thread in web applications. For non-web applications notifications are sent from a background thread as before. Fixes LOG4J2-938. Thanks to Mauro Molinari.rpopma
FixMissing toUpperCase(Locale.ENGLISH). Fixes LOG4J2-957. Thanks to fatih guleryuz.ggregory
FixManual refers to Route "AppenderRef" attribute, should be "ref". Fixes LOG4J2-956. Thanks to David Kellerman.ggregory
UpdateDocumentation: clarify system properties to control status logger, improve troubleshooting FAQ entry. Fixes LOG4J2-955.rpopma
UpdateIncorrect attribute name in PropertiesRewritePolicy example. Fixes LOG4J2-950. Thanks to Joel Edwards.ggregory
FixLog4j Flume appender is not adding millisecond to the event headers when the event is logged at 000 milliseconds. Fixes LOG4J2-944. Thanks to Vinayaka Ramachandra.ggregory
AddAllow JSON layout to create one compact log record per line. Fixes LOG4J2-941. Thanks to Konstantinos Liakos.ggregory
AddHTML layout should not use attribute minimalization for hr noshade. Fixes LOG4J2-933. Thanks to ppiman at
AddSpecify the SyslogAppender connect timeout value as part of the configuration. The SyslogAppender takes a new parameter connectTimeoutMillis. Fixes LOG4J2-895.ggregory
AddSpecify the SocketAppender connect timeout value as part of the configuration. The SyslogAppender takes a new parameter connectTimeoutMillis. Fixes LOG4J2-899.ggregory
FixLog4j 1.2 Bridge doesn't map level ALL correctly in Category.getEffectiveLevel(). Fixes LOG4J2-924. Thanks to Ryan Rupp.ggregory
FixConsoleAppender is missing @PluginFactory annotation at createAppender method. Fixes LOG4J2-931. Thanks to Robert Gacki.ggregory
FixLogging system fails to initialize if XInclude API is not available. Fixes LOG4J2-919. Thanks to David Johle.ggregory
FixThrowableProxy.getExtendedStackTraceAsString causes NullPointerException. Fixes LOG4J2-914. Thanks to Kaj Bjurman.ggregory
FixXML configuration does not report full error message for XInclude parser configuration problems. Fixes LOG4J2-912.ggregory
FixClassLoaderContextSelector uses ClassLoader.toString() as a key. Fixes LOG4J2-903. Thanks to Mauro Molinari.ggregory
FixThrowableProxy throws NoClassDefFoundError. Fixes LOG4J2-834. Thanks to Nikita Koval, Leonard Broman, Thiago Kronig.ggregory
FixNullPointerException on filter when mapping JUL to Log4j2. Fixes LOG4J2-893.ggregory
FixJUL adapter does not map Log4j'2 FATAL level to a JUL level. Fixes LOG4J2-892.ggregory
FixAbstractLifecycle should not implement equals() and hashCode(). Fixes LOG4J2-881. Thanks to Mariano Gonzalez.ggregory
FixJavadoc for org.apache.log4j.BasicConfigurator.configure() is incorrect. Fixes LOG4J2-897.ggregory
FixAbstractLifecycle should not implement equals() and hashCode(). Fixes LOG4J2-891.ggregory
Fix[docs] Using Log4j 2 in Web Applications: Update example (Log4jWebLifeCycle is not visible). Fixes LOG4J2-946. Thanks to artemonster.ggregory
UpdateUpdate docs for SyslogAppender: "No structured id name was supplied". Fixes LOG4J2-901. Thanks to Tihomir Meščić, Siegfried Greisinger.ggregory
UpdateUpdate from Jackson 2.5.0 to 2.5.1. Fixes LOG4J2-958.ggregory
UpdateUpdate from Jackson 2.4.4 to 2.5.0. Fixes LOG4J2-925.ggregory
UpdateUpdate Jackson from 2.4.3 to 2.4.4. Fixes LOG4J2-910.ggregory
UpdateUpdate Jackson from 2.4.2 to 2.4.3. Fixes LOG4J2-881.ggregory
UpdateUpdate maven-core from 3.1.0 to 3.2.3. Fixes LOG4J2-882.ggregory
UpdateUpdate tests from org.apache.felix.framework 4.2.1 to 4.4.1. Fixes LOG4J2-883.ggregory
UpdateUpdate org.eclipse.osgi from 3.6.0 to 3.7.1. Fixes LOG4J2-884.ggregory
UpdateUpdate Apache Flume from to 1.5.2. Fixes LOG4J2-900.ggregory

Release 2.1 – 2014-10-19

FixSome typo fixes and enhancements for the site. Fixes LOG4J2-676. Thanks to Stefan Bodewig.rgoers
AddAdd ShutdownCallbackRegistry interface for customizable shutdown callback handling. This is particularly useful for application servers that wish to integrate with Log4j 2. Fixes LOG4J2-868.mattsicker
FixDocumentation: fixed missing closing parenthesis in code example. Fixes LOG4J2-866. Thanks to Gerard Weatherby.rpopma
FixFixed classloader issue that prevented Log4j from finding the implementation when used in a custom Ant task. Fixes LOG4J2-862. Thanks to Michael Sutherland.mattsicker
AddSupported filtering on custom log levels in configuration. Fixes LOG4J2-589.rpopma
FixDocumentation: fix broken links on left navigation Extending Log4j Configuration sub-menu. Fixes LOG4J2-861.rpopma
AddDocumentation: add sections on the JUL Adapter, IO Streams and NoSQL Appenders to the Maven and Ivy page. Fixes LOG4J2-856.rpopma
FixDocumentation: clarified why log4j-core is a compile time dependency in Maven and Ivy page. Fixes LOG4J2-797. Thanks to Andreas Rytina.rpopma
FixDocumentation: fix broken links on Appenders manual page. Fixes LOG4J2-855.rpopma
FixPrevent NPE when configuration with AsyncLogger/AsyncRoot is reloaded. Fixes LOG4J2-807.rpopma
AddAdd a Java lookup to provide nicely formatted runtime version information. Fixes LOG4J2-848.ggregory
AddMove reflection utility class to API's private utility classes. Fixes LOG4J2-809.mattsicker
UpdateAdd 2.1.0 to compatible versions in Log4j API ProviderUtil and update Log4jAPIVersion to 2.1.0 in core META-INF/ Fixes LOG4J2-845.mattsicker
AddDocumentation: added Runtime Dependencies link to left nav-bar on site. Fixes LOG4J2-833.rpopma
AddDocumentation: added section on XInclude to user manual Configuration page. Fixes LOG4J2-816.rpopma
FixDocumentation: fixed minor issues with Log4j2 web site/documentation. Fixes LOG4J2-678. Thanks to Matt Sicker.rpopma
UpdateUpdate JMH to 1.1 from 0.7.2. Fixes LOG4J2-844.rpopma
FixMigrate JpaHyperSqlAppenderTest JUnit performance test to log4j-perf. Fixes LOG4J2-843.rpopma
FixMigrate JpaH2AppenderTest JUnit performance test to log4j-perf. Fixes LOG4J2-842.rpopma
FixMigrate JdbcHyperSqlAppenderTest JUnit performance test to log4j-perf. Fixes LOG4J2-841.rpopma
FixMigrate JdbcH2AppenderTest JUnit performance test to log4j-perf. Fixes LOG4J2-840.rpopma
FixRespect external interrupt signal to allow application shutdown after joining AsyncAppender thread. Fixes LOG4J2-830.rpopma
FixMarkerManager Log4jMarker.hasParents() returns opposite of correct result. Fixes LOG4J2-813. Thanks to David Erichsen, Brandon Barry.ggregory
FixDocumentation: fixed capitalization inconsistency in user manual example config. Fixes LOG4J2-785.rpopma
FixFixed issue in RollingFile filePattern: backslashes are path separators, not escape characters. Fixes LOG4J2-829.rpopma
AddAdd the Log4j IOStreams component. Fixes LOG4J2-547.mattsicker
AddAdded Memory-Mapped File Appender. Fixes LOG4J2-431. Thanks to Claude Mamo.rpopma
FixThrowableProxy fails if a class in logged stack trace throws java.lang.Error from initializer. Fixes LOG4J2-832. Thanks to Seth Leger.ggregory
UpdateDocumentation: updated FAQ "which jars" diagrams for JUL bridge and 2.1 version. Fixes LOG4J2-831.rpopma
AddSupport use of TypeConverter classes through the standard Plugin system. Fixes LOG4J2-827.mattsicker
FixAvoid ConverterKey plugin clashes by using a more predictable plugin loading infrastructure. Plugins have been segmented into three parts: class path, user-specified packages, and OSGi bundles. Fixes LOG4J2-745. Thanks to Scott Harrington.mattsicker
FixFixed plugin scanning redundancy causing massive slowdowns in certain environments. Fixes LOG4J2-798. Thanks to Scott Harrington.mattsicker
FixReduced CachedClock thread contention. Fixes LOG4J2-753.rpopma
FixFixed memory leak in Tomcat 6 caused by clock background threads unintentionally started by Tomcat after web application stop. Fixes LOG4J2-819. Thanks to Gary Gregory.mattsicker
AddAdd simple validation constraint annotations for the Plugin system. Fixes LOG4J2-825.mattsicker
AddImplement a GELF layout. Fixes LOG4J2-428. Thanks to Mark Paluch, Mikael Ståldal.ggregory
FixFlumePersistentManager now handles LockConflictExceptions in Berkeley Db when sending a batch. Fixes LOG4J2-391. Thanks to Kamal Bahadur.rgoers
FixRemove invalid Oracle Maven repository. Fixes LOG4J2-782.mattsicker
UpdateUpdate Spring Framework to 3.2.11.RELEASE from 3.2.8.RELEASE. Fixes LOG4J2-780.mattsicker
UpdateUnify the two JMS appenders into a single appender. Configurations written for 2.0 will still work in 2.1+. Fixes LOG4J2-815.mattsicker
AddAdd java.util.logging implementation based on log4j-api. See log4j-jul documentation for more details. Fixes LOG4J2-608.mattsicker
FixFixed issue where log4j-to-slf4j did not work correctly with SLF4J Simple Logger. Fixes LOG4J2-796.rpopma
FixSimpleLogger throws ArrayIndexOutOfBoundsException for an empty array. Fixes LOG4J2-811. Thanks to Yogesh Rao.ggregory
FixFix OSGi Import-Package problem with the JMS API. Fixes LOG4J2-663. Thanks to Florian Brunner.mattsicker
AddAdd support for custom SLF4J Markers in log4j-slf4j-impl module. Fixes LOG4J2-793.mattsicker
FixPatternLayout should use platform character encoding by default, not UTF-8. Fixes LOG4J2-783. Thanks to Minglei Lee.rpopma
AddAdd lookup for application main arguments. Fixes LOG4J2-771.ggregory
AddAdd lookup for JVM arguments. Fixes LOG4J2-787.ggregory
UpdateUpdate Jackson to 2.4.2 from 2.4.1 (for XML and JSON processing). Fixes LOG4J2-790.ggregory
UpdateIncomplete documentation for JSONLayout. Fixes LOG4J2-766. Thanks to Bruno P. Kinoshita.ggregory
UpdateAll life cycle implementations should be serializable. This is still work in progress. Fixes LOG4J2-800.ggregory
Updateorg.apache.logging.log4j.core.Logger should be serializable. This is still work in progress. Fixes LOG4J2-801.ggregory
UpdateUpdate javax.mail to 1.5.2 from 1.5.0. Fixes LOG4J2-810.ggregory
UpdateUpdate org.eclipse.persistence.jpa to 2.5.2 from 2.5.1. Fixes LOG4J2-822.ggregory
UpdateFlumeAppender: maxDelay not in seconds, but milliseconds. Add time scale to some settings, for example maxDelayMillis instead of maxDelay. The old names are aliased for compatibility. Fixes LOG4J2-867.ggregory

Release 2.0.2 – 2014-08-16

UpdateUpdate Apache Flume to from 1.5.0. Fixes LOG4J2-775.ggregory
FixSite: log4j-core component pages were still using the old logo. Fixes LOG4J2-773.rpopma
FixDocumentation improvement: link to dependency tree from log4j-core component page, link to log4j-core component page from FAQ page. Fixes LOG4J2-760.rpopma
FixResolved race condition that caused log file rotation to fail with error: "Unable to create directory ...". Fixes LOG4J2-679.rpopma
FixPrevent application from hanging when PatternLayout configuration has opening '{' but no closing '}'. Fixes LOG4J2-726.rpopma
FixStartup takes a long time if you have empty packages attribute. Fixes LOG4J2-769. Thanks to Scott Harrington.rpopma
FixImproved asynchronous loggers and appenders to ensure the formatted message does not change even if parameters are modified by the application. (ParameterizedMessage was already safe.) Improved documentation. Fixes LOG4J2-763. Thanks to Stephen Connolly.rpopma
FixEmit warning message to console if no configuration file found. Fixes LOG4J2-729.rpopma
FixImprove warning message when missing log4j-core in the classpath. Fixes LOG4J2-765.rpopma
FixClarified in documentation that Commons Logging jar is required when using log4j-jcl. Fixes LOG4J2-722.rpopma
FixClarified in documentation that SLF4J API jar is required when using log4j-slf4j-impl. Fixes LOG4J2-723.rpopma
UpdateAllow Log4jContextFactory subclasses to specify a custom ContextSelector. Fixes LOG4J2-730.rpopma
FixFixed various minor site/documentation issues, mostly versioning related. Fixes LOG4J2-759.rpopma
FixPrevent JUnit test from creating unnecessary Log4j2Plugins.dat during build. Fixes LOG4J2-756. Thanks to Scott Harrington.rpopma

Release 2.0.1 – 2014-07-29

FixAvoid unnecessary Clock calls when TimestampMessage is logged. Fixes LOG4J2-744. Thanks to Scott Harrington.rpopma
FixImproved error message if configuration file not found. Fixes LOG4J2-704.rpopma
FixWebapp configuration page has incorrect class name. Fixes LOG4J2-750. Thanks to Mike Calmus.ggregory
FixRetain the default date pattern after fixing the ISO8601 pattern. Fixes LOG4J2-749. Thanks to Scott Harrington.rpopma
FixDatePatternConverter ISO8601_PATTERN now conforms to ISO8601. Fixes LOG4J2-670.rpopma
FixReinstate the package configuration attribute for discovering custom plugins. Fixes LOG4J2-741.rpopma
FixXInclude not working with relative path. Fixes LOG4J2-742. Thanks to Pascal Chollet.ggregory
FixFixed typo in webapp manual regarding sample web.xml file. Fixes LOG4J2-740. Thanks to Kosta Krauth.mattsicker
FixRollingFileManager deadlock if async action thread fails to start. Fixes LOG4J2-738. Thanks to Timothy Stack.ggregory
FixFixed log4j-bom so that it won't specify a default scope on any third party dependencies. Fixes LOG4J2-736.mattsicker
FixFixed log4j-bom so that it won't interfere with spring-bom and others. Fixes LOG4J2-735.mattsicker
FixUpdated documentation regarding extensions to LoggerContextFactory and Log4j 2 providers. Fixes LOG4J2-731.mattsicker
FixFixed ClassLoader issues in loading Log4j providers in an OSGi environment. Fixes LOG4J2-373.mattsicker
AddAdded WebLoggerContextUtils class to log4j-web for helper methods useful for asynchronous servlets. Fixes LOG4J2-725.mattsicker
AddAdded documentation for Custom Levels and Custom Loggers. Fixes LOG4J2-710.rpopma
FixCorrectly handle NetworkOnMainThreadException thrown on Android during Log4j2 initialization. Fixes LOG4J2-719.rpopma
FixAutomatically disable log4j JMX when detecting we are running on Android. Fixes LOG4J2-716.rpopma
FixFixed AbstractDatabaseManager to close connection on writeInternal error. Fixes LOG4J2-657. Thanks to Stefan Wehner.rpopma
FixAndroid: java.lang.VerifyError: org/apache/logging/log4j/core/util/Closer. Fixes LOG4J2-713. Thanks to Nelson Melina.ggregory
FixAndroid: Could not find class 'javax.naming.InitialContext', referenced from method org.apache.logging.log4j.core.lookup.JndiLookup.lookup. Fixes LOG4J2-703. Thanks to Nelson Melina.ggregory
Update to LMAX Disruptor 3.3.0 from 3.2.1. Fixes LOG4J2-732.ggregory
Update to latest Jackson jars from the 2.4.1.X line. Fixes LOG4J2-733.ggregory

Release 2.0 – 2014-07-12

FixFixed issue where Async Logger does not log thread context stack data. API change: added method getImmutableStackOrNull() to ThreadContext.ContextStack interface. Fixes LOG4J2-705.rpopma
FixUpdate docs to clarify how to use formatter logger and standard logger together. Fixes LOG4J2-631.rpopma
AddAdded support for generating custom logger wrappers that replace the existing log levels and extended logger wrappers that add custom log levels to the existing ones. Fixes LOG4J2-519.rpopma
FixLoggerConfigs with no Level now inherit the Level from their parent. Fixes LOG4J2-441.rgoers
AddRegexFilter does not match multiline log messages. Fixes LOG4J2-696.ggregory
FixPatternLayout manual page missing documentation on header/footer. Fixes LOG4J2-699.rpopma
FixFixed Serialization error with SocketAppender and Async Loggers. (Fixed in RC2, but wasn't included in release notes.). Fixes LOG4J2-625.rpopma
FixJMX GUI: fixed occasional ArrayIndexOutOfBoundsException after pressing "reconfigure with XML below". (Fixed in RC2, but wasn't included in release notes.). Fixes LOG4J2-538.rpopma
FixAsyncLoggerContextSelector should ensure that different AsyncLoggerContext objects created by web app classloaders have unique names. Fixes LOG4J2-666.rpopma
FixFix annotation processor warnings on JDK 1.7+. Fixes LOG4J2-683. Thanks to Jurriaan Mous.mattsicker
FixFix strange compilation error that popped up in a test class. Fixes LOG4J2-694.mattsicker
FixUpdate documentation to specify only Maven 3 is supported. Fixes LOG4J2-692.rgoers
FixLog4j Web test dependencies should be in scope "test" in the pom. Fixes LOG4J2-690. Thanks to Philip Helger.rgoers
FixSpecial characters (tab and so on) in PatternLayout do not work. Fixes LOG4J2-682. Thanks to Scott Harrington.ggregory
UpdateMake org.apache.logging.log4j.core.layout.AbstractLayout immutable. Fixes LOG4J2-685.ggregory
FixCore's OptionConverter support for \b is broken (affects PatternLayout). Fixes LOG4J2-686.ggregory
FixRename org.apache.logging.log4j.core.util.Closer.closeSilent() to closeSilently(). Fixes LOG4J2-687.ggregory
FixMake org.apache.logging.log4j.core.layout.PatternLayout immutable. Fixes LOG4J2-688.ggregory
UpdateUpdate Jackson to 2.4.1. Fixes LOG4J2-689.ggregory
FixSome exceptions are not logged when configuration problems are detected. Fixes LOG4J2-707.ggregory
UpdateUpdate Apache Commons Logging to 1.2 from 1.1.3. Fixes LOG4J2-709.ggregory

Release 2.0-rc2 – 2014-06-21

AddRollingFile and RollingRandomAccessFile now write the layout footer before rollover. Fixes LOG4J2-675.rpopma
FixRollingRandomAccessFile now writes the layout header after rollover. Fixes LOG4J2-581. Thanks to Alexander Khokhlov.rpopma
FixRollingFileManager now correctly honours the bufferedIO configuration after rollover. Fixes LOG4J2-622. Thanks to Farooq Khan.rpopma
AddMade RollingFileAppender buffer size configurable. Fixes LOG4J2-674.rpopma
FixImproved documentation regarding log4j status logger. Fixes LOG4J2-141. Thanks to Joern Huxhorn.rpopma
FixFixed issue with "Reconfigure using XML below" function in JMX Client GUI. ConfigurationSource is now a top-level class and can be obtained with Configuration.getConfigurationSource(). LoggerContext.getConfiguration().getConfigurationSource() provides a reliable public method for obtaining a logger context's configuration location and content. Fixes LOG4J2-539. Thanks to Colin Froggatt.rpopma
FixInvalid XML configuration files do not prevent the config file from being checked again. Fixes LOG4J2-619. Thanks to Scott Harrington.rgoers
FixJMX: Updating a Logger's level via jConsole now correctly takes effect. Fixes LOG4J2-637. Thanks to Mansoor Sajjad, Jon Wilmoth.rpopma
FixCorrectly process log events when combining AsyncLoggers with AsyncAppender. Fixes LOG4J2-668.rpopma
FixPrevent NPE when combining AsyncLoggers with AsyncLoggerConfigs. Fixes LOG4J2-669.rpopma
AddCreate an appender to route log events to the ServletContext log. Fixes LOG4J2-42.rgoers
UpdateSupport default value for missing key in look ups with fallback to looking in the properties map. Fixes LOG4J2-419. Thanks to Woonsan Ko.rgoers
FixFlumeAvroManager now always uses a client type of default_failover. Fixes LOG4J2-563. Thanks to Michael Friedmann.rgoers
UpdateAllow configuration files to be located as Servlet Context resources. Fixes LOG4J2-554.rgoers
FixReset rollover time when size rollover is triggered. Fixes LOG4J2-535.rgoers
FixMoved plugin cache file to META-INF for OSGi compatibility. Fixes LOG4J2-664.mattsicker
FixFix NPE that can be caused by a null ThreadContextClassLoader. Fixes LOG4J2-640.mattsicker
AddAdd Vagrantfile for testing in GNU+Linux. Fixes LOG4J2-655.mattsicker
FixLog4j 2 throws ArrayIndexOutOfBoundsException. Fixes LOG4J2-651.ggregory
AddAdd log4j-perf module to provide a home for all log4j performance tests. Add support for JMH microbenchmark performance tests. Fixes LOG4J2-654.rpopma
AddAdd support for default plugin values and attributes. Fixes LOG4J2-652.mattsicker
AddAdd support for types other than String for plugin factory values/attributes. Fixes LOG4J2-598.mattsicker
UpdateRefactor Log4jLogEvent to lazily create ThrowableProxy. Fixes LOG4J2-250.rpopma
UpdateUpgrade to Flume 1.5.0. Fixes LOG4J2-647.ggregory
AddImplement a SecureSocketAppender and secure server (SSL/TLS). Fixes LOG4J2-644.ggregory
UpdateMerge the TLS Syslog appender into the Syslog appender. Fixes LOG4J2-646.ggregory
FixPerform reconfiguration in a separate thread to prevent deadlocks. Fixes LOG4J2-620.rgoers
UpdateOverride commons-logging dependency version in tests. Fixes LOG4J2-641.mattsicker
FixPrevent NPE in AsyncLogger and AsyncLoggerConfig if logger is used after log4j has been shut down. Fixes LOG4J2-639. Thanks to Mck SembWever.rpopma
FixFailoverAppender was not resetting its status after the primary appender recovered. Fixes LOG4J2-469.rgoers
FixGenerate MDC properties as a JSON map in JSONLayout. Fixes LOG4J2-623.rgoers
UpdateMade RollingRandomAccessFileAppender buffer size configurable. Fixes LOG4J2-566. Thanks to Luigi Alice.rpopma
FixResolved issue where AsyncAppender dropped events if queue still contained events when application is stopped. Fixes LOG4J2-520. Thanks to JavaTech, Andre Bogus.rpopma
FixResolved a problem with the previous solution for LOG4J2-392 that resulted in dropped events when using AsyncLoggerConfig with slow appenders when application is stopped. Fixes LOG4J2-392. Thanks to Andre Bogus.rpopma
FixThe OSGi version of log4j-web imports Servlet 2.5 at minimum instead of 3.0. Fixes LOG4J2-613.mattsicker
FixUnit tests are now less verbose during the build process. Fixes LOG4J2-602.rgoers
FixFix shutdown thread memory leak in servlet containers. Fixes LOG4J2-570.mattsicker
UpdateUse Clock to generate all log event timestamps, not just for Async Loggers. Fixes LOG4J2-628.rpopma
AddDocument the system properties used in Log4J 2. Fixes LOG4J2-629.rpopma
FixMake Throwable transient in ThrowableProxy. Fixes LOG4J2-542.rgoers
UpdateUpdate SLF4J to 1.7.7. Fixes LOG4J2-617.mattsicker
UpdateUpdate Jackson to 2.3.3. Fixes LOG4J2-616.mattsicker
FixDuring shutdown, a NullPointerException could be thrown due to the NullConfiguration class no longer being available to the ClassLoader. Fixes LOG4J2-440.mattsicker
FixCyclic dependency with log4j-slf4j-impl in OSGi. Fixes LOG4J2-346.mattsicker
FixThe log4j-1.2-api module didn't export any packages to OSGi. Fixes LOG4J2-345.mattsicker
FixPassword data from the NoSQL plugins no longer shows up in cleartext in debug logging. Fixes LOG4J2-605.mattsicker
FixA StringIndexOutOfBounds exception could occur during property substitution. Fixes LOG4J2-448. Thanks to X86core.rgoers
FixStatusLogger was not skipping multiple instances of the FQCN class, causing messages from classes in the Verbose list to be printed. Fixes LOG4J2-597.rgoers
UpdateAdd support for multiple parents to Markers. Fixes LOG4J2-585. Thanks to Bruce Brouwer.rgoers
AddIntroduce Java annotation processor as the new plugin pre-caching mechanism. This is available in log4j-core. All custom plugins created before this should be re-built against the current log4j-core. Fixes LOG4J2-595.mattsicker
FixRenamed SLF4J logger class to Log4jLogger. Fixes LOG4J2-564.mattsicker
FixRework Level comparison APIs. Fixes LOG4J2-579.ggregory
AddAdd org.apache.logging.log4j.Logger.getLevel(). Fixes LOG4J2-576.ggregory
UpdateMake Blocking the default WaitStrategy for Async Loggers. Fixes LOG4J2-574.rpopma
UpdateIntroduce ExtendedLogger interface to facilitate implementing and extending Loggers. Fixes LOG4J2-555. Thanks to Bruce Brouwer.rpopma
FixSyslogAppenderTest and RFC5424LayoutTest were failing in Java 8. Fixes LOG4J2-560.rgoers
UpdateAllow spaces around commas in Configuration's package attribute. Fixes LOG4J2-561. Thanks to vibin.ggregory
UpdateHave Logger API expose a PrintWriter instead of custom LoggerStream. Fixes LOG4J2-547. Thanks to Bruce Brouwer.rgoers
AddAdd EncodingPatternConverter to escape newlines and HTML special characters. Fixes LOG4J2-439. Thanks to Bruce Brouwer.rgoers
UpdateAllow header and footer to be specified as lookup patterns in PatternLayout. Fixes LOG4J2-496.rgoers
FixAdd equals and hashcode to Log4jLogEvent. Fixes LOG4J2-499.rgoers
UpdateSLf4JLogger is now Serializable. Fixes LOG4J2-410. Thanks to Ivlin Zeng.rgoers
AddAdd support for configuration via YAML. Fixes LOG4J2-427. Thanks to Alexander Reelsen.rgoers
FixAdd DateLookup and ThreadContextLookup to default lookups. Fixes LOG4J2-378.rgoers
UpdateAdd support to add a LoggerConfig. Document two ways to modify the configuration. Fixes LOG4J2-468.rgoers
UpdateRename to TCPSocketServer and refactor with UDP. Fixes LOG4J2-582.ggregory
UpdateUpdate Jackson to 2.3.2 from 2.2.2. Fixes LOG4J2-592.ggregory

Release 2.0-rc1 – 2014-02-16

Removed the DataSourceConnectionSource and the <DriverManager> plugin for the JDBC Appender. It is not safe to use. Please use the DataSource or factory connection sources backed by a connection pool.nickwilliams
UpdateRenamed the org.apache.logging.log4j.core.appender.db.nosql.mongo package to org.apache.logging.log4j.core.appender.db.nosql.mongodb.nickwilliams
UpdateRenamed the org.apache.logging.log4j.core.appender.db.nosql.couch package to org.apache.logging.log4j.core.appender.db.nosql.couchdb.grobmeier
Fix(JMX - ObjectNames changed!) Unloading one web application unloads JMX MBeans for all web applications. Fixes LOG4J2-500.rpopma
UpdateSpace Level numbers by 100 instead of 1. Fixes LOG4J2-507.ggregory
FixFixed bugs where rolled log files were overwritten by RollingFile appender with composite time and size based policies. Fixes LOG4J2-531. Thanks to Geoff Ballinger.rpopma
FixChanged the MongoDBConnection to add a MongoDB encoding hook instead of a decoding hook. Fixes LOG4J2-475. Thanks to Matt Sicker.nickwilliams
FixFixed the JPAAppender's overuse of transactions by connecting (borrowing from pool) on new write internal or on flush. Fixes LOG4J2-489.nickwilliams
FixFixed failure of JDBC and JPA appender to properly release database connections by connecting (borrowing from pool) on new write internal or on flush. Fixes LOG4J2-457.nickwilliams
FixFixed problem with JDBC and JPA appender connectivity in WebSphere by connecting (borrowing from pool) on new write internal or on flush. Fixes LOG4J2-442.nickwilliams
FixEnsured the JDBCAppender commits transactions after a single write or a flush of multiple writes. Fixes LOG4J2-438.nickwilliams
FixFixed inability to recover from lost database connection in database appenders by connecting (borrowing from pool) on new write internal or on flush. Fixes LOG4J2-407.nickwilliams
Add(JMX) JMX Client GUI should dynamically update when LoggerContext MBeans are registered/unregistered in MBean server. Fixes LOG4J2-530.rpopma
FixStop AsyncLoggerConfig Disruptor thread(s), then AsyncAppender thread(s) first before stopping other appenders. Fixes LOG4J2-511. Thanks to James Pretorius.rpopma
FixStop AsyncLoggerConfig Disruptor thread(s), then AsyncAppender thread(s) first before stopping other appenders. Fixes LOG4J2-392. Thanks to ilynaf, Andre Bogus.rpopma
Fix(OSGi) logging.log4j-1.2-api doesn't export the log4j API 1.2. Dependent bundles can not be resolved. Fixes LOG4J2-345. Thanks to Roland Weiglhofer, Matt Sicker.rpopma
FixLocalizedMessage serialization is broken. Fixes LOG4J2-523.ggregory
FixFixed issues with time-based file rollover (monthly, weekly, hourly and every minute). Fixes LOG4J2-385. Thanks to Ace Funk, Porfirio Partida.rpopma
FixAdded a ServletContext attribute that, when set to "true", disables Log4j's auto-initialization in Servlet 3.0+ web applications. Fixes LOG4J2-452.nickwilliams
FixExposed Log4j web support interface and methods and the LoggerContext through ServletContext attributes so that threads not affected by filters (such as asynchronous threads) can utilize the LoggerContext. Also updated the Log4j filter so that it supports async. Fixes LOG4J2-512. Thanks to Chandra Sekhar Kakarla, Matt Sicker.nickwilliams
FixCreated a utility to properly escape backslashes before creating URIs, and changed URI creation to use the utility instead of instantiating URI directly. Fixes LOG4J2-409. Thanks to Frank Steinmann, Thomas Neidhart.nickwilliams
FixChanged the Servlet 3.0 auto-initializer to add the filter by class to get around a WebLogic bug. Fixes LOG4J2-344. Thanks to Keir Lawson, Tomasz Wladzinski.nickwilliams
FixChanged the Servlet 3.0 auto-initializer so that it does nothing in a Servlet 2.5 or older application. This ensures behavioral consistency across containers. This includes additional fixes to abort initialization if a duplicate filter already exists and to check the actual Servlet EFFECTIVE version. Fixes LOG4J2-359. Thanks to Abhinav Shah.nickwilliams
FixSwitch in log4j-1.2-api Category.getEffectiveLevel has no cases for FATAL, OFF. Fixes LOG4J2-517.rpopma
UpdateAdd support for custom logging levels. Fixes LOG4J2-41. Thanks to Nick Williams.rgoers
Fix(JMX) Unregister all log4j JMX MBeans when the LoggerContext is stopped to allow web application classes to be GC-ed on undeploy. Fixes LOG4J2-406. Thanks to Kerrigan Joseph.rpopma
FixConfiguration was being processed twice at startup. Fixes LOG4J2-405.rgoers
AddThreadContext now uses plain ThreadLocal by default, unless system property isThreadContextMapInheritable has value "true". Fixes LOG4J2-479. Thanks to MK.rpopma
FixConfigure properties and setup Interpolator before processing rest of configuration. Fixes LOG4J2-398.rgoers
AddAdd Stream interface to Loggers. Fixes LOG4J2-481. Thanks to Matt Sicker.rgoers
UpdateUpdate EasyMock to version 3.2. Fixes LOG4J2-490. Thanks to Matt Sicker.rgoers
FixhostName property was not being set until after the first configuration element. Fixes LOG4J2-470.rgoers
FixSupport arrays as sub-elements of a JSON configuration. Fixes LOG4J2-464.rgoers
Fix(JMX) Fixed MalformedObjectNameException if context name contains '=' or newline characters. Fixes LOG4J2-492. Thanks to Shaddy Baddah, Herlani Junior.rpopma
Fix(OSGi) Fix NPE during shutdown. Fixes LOG4J2-377. Thanks to Roland Weiglhofer, Matt Sicker.rpopma
FixFixed documentation for MyApp example application in the Automatic Configuration section. Fixes LOG4J2-463. Thanks to Michael Diamond, Matt Sicker.rpopma
FixFixed error in documentation code example in manual/eventlogging.html. Fixes LOG4J2-408. Thanks to Dongqing Hu, Matt Sicker.rpopma
FixFixed typo in documentation: system property should be log4j2.loggerContextFactory. Fixes LOG4J2-451. Thanks to Vinay Pothnis, Matt Sicker.rpopma
Fix(JMX) Fixed issue where log4j2 LoggerContext did not show up in JMX GUI or JConsole. Fixes LOG4J2-443. Thanks to Colin Froggatt, Tudor Har.rpopma
FixFixed issue where toString methods that perform logging could deadlock AsyncAppender. Fixes LOG4J2-485.rpopma
FixResolverUtil cannot find packages in file URLs which include the '+' character. Fixes LOG4J2-445. Thanks to Anthony Baldocchi.rpopma
FixUse the formatted Message in RFC5424Layout for non-StructuredDataMessages. Fixes LOG4J2-430. Thanks to David Gstir.rgoers
FixSet external context when constructing the LoggerContext. Fixes LOG4J2-459.rgoers
FixCannot load log4j2 config file if path contains plus '+' characters. Fixes LOG4J2-466. Thanks to Jan Tepke.rpopma
FixFix LogEvent to never return null Level, fixes LevelPatternConverter.format may throw NPE. Fixes LOG4J2-462. Thanks to Daisuke Baba.rpopma
FixFix LogEvent to never return null Level, fixes ThresholdFilter throws NPE. Fixes LOG4J2-465. Thanks to Daisuke Baba.rpopma
FixFixed issue where toString methods that perform logging could deadlock AsyncLogger. Fixes LOG4J2-471. Thanks to Anthony Baldocchi.rpopma
AddDocumentation fix: The attribute of Route to refer to an appender is "ref" not "AppenderRef". Fixes LOG4J2-482. Thanks to Hongdi Ren.rpopma
AddAdded option to toggle Thread name caching in AsyncLogger. Fixes LOG4J2-467. Thanks to Anthony Baldocchi.rpopma
FixThe message and ndc fields are not JavaScript escaped in JSONLayout. Fixes LOG4J2-478. Thanks to Michael Friedmann..ggregory
FixRingBufferLogEvent should return Message timestamp for TimestampMessage messages. Fixes LOG4J2-455. Thanks to Robin Zhang Tao.rpopma
FixNPE in ClassLoaderContextSelector. Fixes LOG4J2-477. Thanks to Tal Liron.rpopma
FixTimeBasedTriggeringPolicy should use event time millis. Fixes LOG4J2-454. Thanks to Robin Zhang Tao.rpopma
FixBaseConfiguration class does not properly implement Configuration interface. Fixes LOG4J2-472. Thanks to Tal Liron.rpopma
FixXMLLayout does not include marker name. Fixes LOG4J2-447. Thanks to Jeff Hudren, Mark Paluch, Scott Deboy.ggregory
UpdateUpdate Flume Appender to use Flume 1.4.0. Fixes LOG4J2-453.rgoers
Add(JMX) Added MBeans for instrumenting AsyncAppenders and AsyncLogger RingBuffers, exposing queue size, remaining capacity and other attributes. Fixes LOG4J2-423.rpopma
FixResolved memory leak by releasing reference to ThreadLocal when AsyncLogger is stopped. Fixes LOG4J2-323.rpopma
FixResolved memory leak by populating AsyncLoggerConfigHelper ring buffer via EventTranslatorTwoArg, eliminating the need for a ThreadLocal. Fixes LOG4J2-425.rpopma
AddCreate a lookup for resource bundle substitution. Fixes LOG4J2-420.ggregory
FixFix Event Level / LoggerConfig Level table at the architecture documentation page. Fixes LOG4J2-417.ggregory
AddFormat log event time as UNIX time (seconds or milliseconds). Fixes LOG4J2-415.ggregory
Fix@EnterpriseNumber" was missing in the ID of structured data when RFC5424Layout is used. Fixes LOG4J2-404. Thanks to Kamal Bahadur.rgoers
FixFixed issue that prevented Log4J from working in Google App Engine. Fixes LOG4J2-379.rpopma
AddConfigure FileAppender buffer size. Fixes LOG4J2-401.ggregory
AddConfigure RandomAccessFileAppender buffer size. Fixes LOG4J2-402.ggregory
UpdateRename package org.apache.logging.log4j.core.appender.rolling.helper to org.apache.logging.log4j.core.appender.rolling.action. Fixes LOG4J2-528.ggregory
UpdateResource leak in Flume appender when it cannot create a BerkeleyDB db. Fixes LOG4J2-532.ggregory
UpdatePatternLayout option to not output ANSI escape codes if no Console is available. Fixes LOG4J2-413.ggregory

Release 2.0-beta9 – 2013-09-14

UpdateRenamed FastFileAppender and FastRollingFileAppender to RandomAccessFileAppender and RollingRandomAccessFileAppender. Configurations using the Fast(Rolling)File element no longer work and should be modified to use the (Rolling)RandomAccessFile element. Fixes LOG4J2-317.ggregory
UpdateChanged the "suppressExceptions" configuration attribute for all Appenders to "ignoreExceptions" to avoid confusion with Java 7 suppressed exceptions. Also renamed the Appender#isExceptionSuppressed() method to Appender#ignoreExceptions() to avoid the same confusion. All Appenders by default internally log and then ignore exceptions encountered while logging. Setting "ignoreExceptions" to "false" on an Appender causes it to allow exceptions to propagate to the caller. You must set "ignoreExceptions" to "false" for Appenders you are wrapping in the Failover Appender.nickwilliams
UpdateChanged the (relatively new) PatternLayout configuration attribute "suppressExceptions" to "alwaysWriteExceptions" to more correctly indicate what it does. As such, the meaning of this attribute has reversed (previous "true"s should become "false"s, and vice versa). Since this was an undocumented attribute up until now, it's unlikely this change will affect any users.nickwilliams
FixFix table of contents generation in pdf. Fixes LOG4J2-226.rgoers
FixAllow classpath scheme when specifying configuration file location as a system property. Fixes LOG4J2-395. Thanks to Abhinav Shah.rgoers
FixInitialize PluginManager once during configuration. Move advertisement setup into BaseConfiguration. Fixes LOG4J2-393.rgoers
FixFlumePersistentManager now handles LockConflictExceptions in Berkeley Db. Fixes LOG4J2-391. Thanks to Kamal Bahadur.rgoers
AddAllow the default file rollover strategy to define the compression level. Fixes LOG4J2-399.ggregory
AddAdd TLSAppender. Also added missing license headers to several files. Fixes LOG4J2-338. Thanks to Tibor Benke.rgoers
FixUse rollover date when substituting ${date} in the filePattern. Fixes LOG4J2-380.rgoers
AddAdded FAQ page to the site. Fixes LOG4J2-253.rpopma
AddAdd a diagram to the site (FAQ page) that explains when to use which jar. Fixes LOG4J2-362.rpopma
FixCentralized reflective use of Reflection#getCallerClass and properly handled its instability in various versions of Java. Fixes LOG4J2-322.nickwilliams
FixReset the Configuration if the ClassLoaderContextSelector creates a LoggerContext without a configuration location and then is later provided one. Fixes LOG4J2-293.rgoers
FixChanged the ConfigurationFactory to recognize and properly use the classpath: URI scheme in addition to the classloader: URI scheme. Fixes LOG4J2-293. Thanks to Abhinav Shah.nickwilliams
FixChanged the Servlet 3.0 auto-initializer so that it does nothing in a Servlet 2.5 or older application. This ensures behavioral consistency across containers. Fixes LOG4J2-359. Thanks to Abhinav Shah.nickwilliams
AddAdd more options to PatternLayout to display more detailed information about a Throwable. Fixes LOG4J2-374. Thanks to Tibor Benke.ggregory
Add[Pattern Layout] Customize level names by length. Fixes LOG4J2-383.ggregory
Add[Pattern Layout] Customize level names to lower-case. Fixes LOG4J2-384.ggregory
UpdateAdd support for multiple SD-ELEMENTs in a RFC 5424 syslog message. Fixes LOG4J2-355. Thanks to Tibor Benke.ggregory
UpdateCleaned up tests and cleared up documentation for the JPA appender following the resolution of EclipseLink issue #412454.nickwilliams
FixFixed issue where SMTPAppender did not send mails with error or fatal level without prior info event. Fixes LOG4J2-310. Thanks to Olivier Lemasle.rpopma
FixAdd PatternLayout constructor to Log4j 1.2 bridge for Velocity. Fixes LOG4J2-368.rgoers
FixMatch artifact ids with Maven module names. Fixes LOG4J2-333. Thanks to Hervé Boutemy.ggregory
AddAdd WebLookup to retrieve information from the ServletContext. Fixes LOG4J2-364. Thanks to David Nault.rgoers
FixJMS appenders send two messages for one append. Fixes LOG4J2-367. Thanks to David Parry.ggregory
FixDouble stack trace logging when using %throwable in %style and %highlight. Fixes LOG4J2-319.ggregory
AddAllow Plugins to have aliases. Fixes LOG4J2-360.rgoers
FixNoSQLAppender using MongoDB provider ignores username and password attributes. Fixes LOG4J2-358.nickwilliams
AddCreate a JSON Layout. Fixes LOG4J2-356.ggregory
FixRemoved unnecessary generics from Appender interface and implementing classes. Fixes LOG4J2-343. Thanks to Henning Schmiedehausen.rpopma
Fix[OSGi] wrong Fragment-Host in manifest files. Fixes LOG4J2-351. Thanks to Roland Weiglhofer.rpopma
FixAsyncLogger errors after multiple calls to LoggerContext.reconfigure(). Fixes LOG4J2-336. Thanks to Andre Bogus.rpopma
FixGive the AsyncAppender thread a more descriptive name for easier debugging/profiling. Fixes LOG4J2-347. Thanks to David Phillips.rpopma
FixModified documentation to refer to SLF4J Binding instead of SLF4J Bridge. Fixes LOG4J2-332. Thanks to Hervé Boutemy.rgoers
FixIgnore xml:base attributes. Fixes LOG4J2-342.rgoers
FixInsure jars and distributions only have a single License and Notice file. Fixes LOG4J2-309.rgoers
AddEnable XInclude for XML configurations. Fixes LOG4J2-341.ggregory
FixJPAAppender stops logging because META-INF/ is left open. Fixes LOG4J2-320.ggregory
FixFlumePersistentManager's writer thread had high CPU usage. Fixes LOG4J2-335.rgoers
FixRemoved erroneous check for affected MongoDB records, which always returns zero on inserts. Fixes LOG4J2-331.nickwilliams
FixAdded a BSON Transformer so that MongoDB can persist Log4j events. Fixes LOG4J2-330.nickwilliams
FixStatusLogger now only creates StatusData objects if they are the appropriate logging level. Fixes LOG4J2-329.rgoers
FixFlumePersistentManager was calling Berkeley DB's count method too frequently. Fixes LOG4J2-328.rgoers
FixAdditional fix to make AsyncAppender threads daemon threads and improve their thread name. Fixes LOG4J2-280.rpopma
FixThe slf4j-ext jar is now an optional dependency of the SLF4J bridge. Fixes LOG4J2-165.rgoers
UpdateAllow shutdown hook to be disabled in the configuration. Fixes LOG4J2-318.rgoers
FixRoutingAppender's default Route can now be an appender reference. Fixes LOG4J2-166.rgoers
AddAdd JNDILookup plugin. Fixes LOG4J2-313. Thanks to Woonsan Ko.rgoers
FixAdd getThrowable method to ThrowableProxy. Fixes LOG4J2-299.rgoers
FixThrowableProxy no longer extends Throwable. Fixes LOG4J2-216.rgoers
FixSynchronized flush() and close() methods in the XxxFileManager and OutputStreamManager classes. Fixes LOG4J2-311.rpopma
UpdateXML layout improvements (compact vs. pretty, namespace, namespace prefix, root element). Fixes LOG4J2-312.ggregory
UpdateUpdate Java Mail dependency to 1.5.0 from 1.4.7. Fixes LOG4J2-388.ggregory
UpdateUpdate JDBC tests to use H2 database 1.3.173 from 1.3.172. Fixes LOG4J2-325.ggregory
UpdateUpdate commons-logging to 1.1.3 from 1.1.1. Fixes LOG4J2-366.ggregory
UpdateUpdate HSQLDB dependency to 2.3.0 from 2.2.9. Fixes LOG4J2-390.ggregory
UpdateClarified which library versions were used in Async Loggers performance test. Fixes LOG4J2-308.rpopma
UpdateUpdated Async Loggers' LMAX Disruptor library from 3.0.1 to 3.2.0. Fixes LOG4J2-307.rpopma
UpdateUpdate JSON Jackson library to 2.2.2 from 2.2.1. Fixes LOG4J2-306.ggregory
UpdateUpdate Jackson dependency to 1.9.13 from 1.9.11. Fixes LOG4J2-387.ggregory
AddEase porting from 1.x Logger.getRootLogger(): add LogManager.getRootLogger(). Fixes LOG4J2-305.ggregory
FixFixed Async Loggers memory leak. Fixes LOG4J2-304.rpopma
FixFixed JDBC, JPA, and NoSQL appenders so that the failover appender properly fails over on error. Fixes LOG4J2-291.nickwilliams
UpdateImproved site by adding quick jump-off page and menu for Javadoc links for all components.nickwilliams Javadoc is incorrect. Fixes LOG4J2-397. Thanks to Yonatan Graber.ggregory

Release 2.0-beta8 – 2013-07-10

UpdateImproved logging initialization in Servlet containers, especially Servlet 3.0 and newer where Log4j now initializes and deinitializes automatically with no deployment descriptor configuration. Fixes LOG4J2-270.nickwilliams
FixAdded toString methods to ThreadContextStack/Map implementation classes. Fixes LOG4J2-302.rpopma
UpdateAdd printf methods to Logger API. Fixes LOG4J2-301.rgoers
FixWriterThread was ending when no agents are available which caused an OutOfMemoryError. Fixes LOG4J2-300.rgoers
UpdateAllow the default status level to be specified as a system property. Fixes LOG4J2-282.rgoers
FixFilter calls from Avro or Flume to be ignored by the FlumeAppender. Fixes LOG4J2-278.rgoers
FixFlumePersistentManager now calls Berkeley DB from threads to avoid encountering interrupts in the application. Fixes LOG4J2-279.rgoers
FixWasted work in FlumePersistentManager.createManager. Fixes LOG4J2-296.ggregory
FixWasted work in TestConfigurator.testEnvironment. Fixes LOG4J2-297.ggregory
FixWasted work in StyleConverterTest.setupClass. Fixes LOG4J2-298.ggregory
FixAsyncLogger threads are now daemon threads and won't prevent the JVM from shutting down anymore. Fixes LOG4J2-280.rpopma
FixFast(Rolling)FileAppender now correctly handles messages exceeding the buffer size. Fixes LOG4J2-295.rpopma
FixFastRollingFileAppender with TimeBasedTriggeringPolicy now works correctly if append=false. Fixes LOG4J2-271.rpopma
FixFastRollingFileAppender with TimeBasedTriggeringPolicy now works correctly if append=false. Fixes LOG4J2-267.rpopma
FixFast(Rolling)FileAppender now correctly appends to (does not overwrite) existing file. Fixes LOG4J2-292.rpopma
UpdateLogManager.getLogger can now be called without a logger name or with a null logger name. Fixes LOG4J2-294.rgoers
FixUpgrade javadoc plugin to 2.9.1 to fix javadoc security issue. Fixes LOG4J2-289.rgoers
UpdateUpdate JUnit to 4.11 from 4.7. Fixes LOG4J2-288.gregory
UpdateUpdate test H2 JDBC driver to 1.172 from 1.171. Fixes LOG4J2-286.gregory
UpdateUpdate Jansi jar to 1.11 from 1.9. Fixes LOG4J2-285.gregory
UpdateUpdate Log4j 1 dependency to 1.2.17 from 1.2.16. Fixes LOG4J2-284.gregory
UpdateUpdate NoSQL dependencies: lightcouch 0.0.6 from 0.0.5, mongodb 2.11.2 from 2.11.1. Fixes LOG4J2-386.gregory
UpdateRemove dependency on Apache ORO jar. Fixes LOG4J2-283.gregory
UpdateWasted work in RollingAppenderSizeTest.testAppender() and others. Fixes LOG4J2-277.gregory
FixFix NullPointerException (regression due to fix for LOG4J2-228). Fixes LOG4J2-139.rgoers
UpdateInclude arbitrary message fields in RFC-5424 structured data. Fixes LOG4J2-168. Thanks to Scott Severtson.rgoers
FixFlumeAvroManager fails to notify client of failing event if Flume RPCClient cannot be created. Fixes LOG4J2-275.rgoers
UpdateWasted work in UUIDUtil initialization. Fixes LOG4J2-274.ggregory
UpdateWasted work in XMLLayout.toSerializable(). Fixes LOG4J2-273.ggregory

Release 2.0-beta7 – 2013-06-01

UpdateAllow context parameters in Log4jContextListener to include properties. Fixes LOG4J2-249.rgoers
FixDo not allow a charset on RFC5424Layout - use UTF-8. Fixes LOG4J2-263.rgoers
FixStringFormattedMessage and MessageFormatMessage now will accept a Throwable as their last argument and pass it on. Fixes LOG4J2-242.rgoers
UpdateAllow custom LogEventFactories. Fixes LOG4J2-243.rgoers
UpdateAdd support for interceptors in the embedded Flume Appender. Fixes LOG4J2-262. Thanks to Edward Sargisson.rgoers
FixUse transaction when batch size is 1. Fixes LOG4J2-269.rgoers
FixAdd guid to FlumeEvent headers for non-Map Messages. Fixes LOG4J2-268.rgoers
FixData buffer is reset in finally clause. Fixes LOG4J2-246.rgoers
FixUDP now sends one event per packet. Fixes LOG4J2-228.rgoers
UpdateMethod name changes in interface org.apache.logging.log4j.spi.ThreadContextMap: getContext() to getCopy(), get() to getImmutableMapOrNull().rpopma
UpdateImprove ThreadContext performance with copy-on-write map and stack. Fixes LOG4J2-154.rpopma
FixAdd missing "not" to error message. Fixes LOG4J2-261. Thanks to Edward Sargisson.rgoers
AddBreak up core into multiple osgi jars. Fixes LOG4J2-10. Thanks to Timothy Ward.rgoers
FixRemove LoggerContext when LoggerContext is stopped. Fixes LOG4J2-223.rgoers
FixXML layout does not specify charset in content type. Fixes LOG4J2-260.ggregory
FixHTML layout does not specify charset in content type. Fixes LOG4J2-259.ggregory
FixHTML layout does not output meta element for charset. Fixes LOG4J2-258.ggregory
FixXML layout ignores charset for the XML processing instruction's encoding attribute. Fixes LOG4J2-257.ggregory
FixMulti-byte character strings are now assumed to be in the platform default encoding, not UTF-8. Fixes LOG4J2-255.rpopma
FixMark OutputStream in OutputStreamManager as volatile. Mark header and footer as final. Fixes LOG4J2-254.rgoers
FixRewrite Appender was ignoring filters on referenced appenders. Fixes LOG4J2-244.rgoers
FixAvoid EmptyStack exception if getCallerClass and SecurityManager are not available. Fixes LOG4J2-245.rgoers
AddNew JDBC, JPA, and NoSQL database Appenders. Fixes LOG4J2-229. Thanks to Nick Williams.ggregory
FixSocketServer.isActive should be volatile because it is accessed from different threads. Fixes LOG4J2-247.ggregory
AddProvide configuration information (location, content type, content if possible) via a registered Advertiser. Fixes LOG4J2-251.sdeboy

Release 2.0-beta6 – 2013-05-05

FixLogger.getParent() was not returning the correct Logger. Fixes LOG4J2-231.rgoers
FixRenamed Plugin annotation attribute from "type" to "category". Fixes LOG4J2-201.rgoers
UpdateMoved JMX Client GUI classes into separate jmx-gui submodule. Fixes LOG4J2-237.rpopma
FixFix: install default root logger if not configured (this is unchanged), but make sure to include configured named loggers. Clarified documentation. Fixes LOG4J2-219. Thanks to Peter DePasquale.rpopma
FixUse OSGi version format in Fragment-Host. Fixes LOG4J2-159.rgoers
FixRegexFilter threw a NullPointerException when used as a context-wide filter. Fixes LOG4J2-234.rgoers
FixAdd support for interpolating Environment variables when processing the configuration. Fixes LOG4J2-192.rgoers
FixRemoved dependency on tools jar from core module, made jconsole dependency optional. Fixes LOG4J2-235. Thanks to Sebastian Oerding.rpopma
FixFixed link to log4j-user mailing list. Fixes LOG4J2-233.rpopma
UpdateImproved error reporting when misconfigured. Fixes LOG4J2-230. Thanks to Wojciech Zaręba.rpopma
FixDisruptor will now shutdown during Tomcat shutdown. Fixes LOG4J2-222. Thanks to Steven Yang.rgoers
UpdateRenamed AsynchAppender to AsyncAppender. Plugin name became Async (was Asynch).rpopma
UpdateRemoved CheckStyle false positives for NewlineAtEndOfFile and whitespace following '*' at end of line in javadoc.rpopma
UpdateMoved Clock interface to package org.apache.logging.log4j.core.helpers.rpopma
UpdateDocumentation updates to clarify use and impact of location in pattern layouts. Fixes LOG4J2-225.rpopma
FixThe FlumeAppender failed to start if the Flume RPCClient could not connect to any Flume agents. Fixes LOG4J2-224.rgoers
FixFix LoggerContext start and stop to eliminate IllegalStateException and NoClassDefFound errors. Fixes LOG4J2-223.rgoers
FixRemove hundreds of compiler warnings. Fixes LOG4J2-221. Thanks to Nick Williams.rgoers
FixVarious small documentation fixes. Fixes LOG4J2-215.rpopma
FixEnsure PluginManager streams are always closed. Fixes LOG4J2-217. Thanks to Fabien Sanglard.rpopma

Release 2.0-beta5 – 2013-04-20

FixFix deadlock in SocketAppender. Added option to not wait for socket reconnect. Fixes LOG4J2-205.rgoers
AddAdd JMX support. Fixes LOG4J2-207. Thanks to Remko Popma.rgoers
FixRemoving extra spaces in entry and exit method output. Fixes LOG4J2-211. Thanks to Nick Williams.rgoers
UpdateAsync documentation update. Fixes LOG4J2-214. Thanks to Remko Popma.rgoers
FixLoggers without a "." had no parent logger. Fixes LOG4J2-212.rgoers
UpdateMove async subproject into core. Fixes LOG4J2-208. Thanks to Remko Popma.rgoers
FixCall LoggerContext.stop when the application is shutdown. Fixes LOG4J2-212.rgoers
FixMapMessage was not enclosing key value in quotes when generating XML. Fixes LOG4J2-210. Thanks to Arkin Yetis.rgoers
FixFlumeAvroManager now uses Flume RPCClient. Fixes LOG4J2-198.rgoers
FixFlumeAvroManager now uses Flume RPCClient. Fixes LOG4J2-196.rgoers
FixUse the Maven group ID org.apache.logging.log4j for all artifacts. Fixes LOG4J2-207.ggregory
AddAdd tag library. Fixes LOG4J2-187. Thanks to Nick Williams.rgoers
FixUnit tests now create files in the target directory. Fixes LOG4J2-195. Thanks to Remko Popma.rgoers
FixRollingFastFileAppender (in log4j-async) did not roll over. Fixes LOG4J2-193. Thanks to Remko Popma.rgoers
FixHighlight subprojects in sub-navigation. Fixes LOG4J2-199. Thanks to Remko Popma.rgoers
FixLoggerContext method renamed to removeFilter from removeFiler. Fixes LOG4J2-200. Thanks to Remko Popma.rgoers
FixThrowableFormatOptionsTest failed on Windows due to CR/LF issue. Fixes LOG4J2-194. Thanks to Remko Popma.rgoers
FixBaseConfiguration addLoggerAppender saved appender using the Logger name. Fixes LOG4J2-190. Thanks to Werner.rgoers
UpdateMove Throwable pattern converter options processing to ThrowableFormatOptions class. Fixes LOG4J2-160. Thanks to Joanne Polsky.rgoers
UpdateAllowed Loggers access to the properties in the LoggerConfig. Fixes LOG4J2-157. Thanks to Remko Popma.rgoers
UpdateAdded ability to include or exclude location information. Fixes LOG4J2-153. Thanks to Remko Popma.rgoers
UpdateAllow Logger and LoggerContext to be subclassed. Fixes LOG4J2-151. Thanks to Remko Popma.rgoers
AddAdd methods is/setEndOfBatch to LogEvent. Fixes LOG4J2-164. Thanks to Remko Popma.rgoers
AddAdd support for asynchronous loggers. Fixes LOG4J2-163. Thanks to Remko Popma.rgoers
FixThe blocking parameter did not work properly on AsynchAppender. Fixes LOG4J2-189. Thanks to Werner.rgoers
FixAppenderRefs on AsynchAppender didn't support the level and filter elements. Fixes LOG4J2-188. Thanks to Werner.rgoers
FixAvoid IllegalArgumentException in AsynchAppender. Fixes LOG4J2-176. Thanks to Remko Popma.rgoers
AddAdd Logger interface APIs to log at given levels. Fixes LOG4J2-179.ggregory
FixOutputStreamManager now adds the layout header whenever the OutputStream is set. Fixes LOG4J2-181.rgoers
FixFix NullPointerException in DatagramOutputStream when flush is called from multiple threads. Fixes LOG4J2-177. Thanks to Remko Popma.rgoers
AddAdded FlumePersistentManager which writes to BerkeleyDB and then writes to Flume asynchronously.rgoers
FixPlugin cache should be reset when addPackages is called. Fixes LOG4J2-175.sdeboy
AddExpose file appender configuration details via an advertisement mechanism. Fixes LOG4J2-155.sdeboy
FixAdd Fragment-Host to MANIFEST.MF for log4j-core. Fixes LOG4J2-159. Thanks to Jan Winter.rgoers
FixConfigurator throws a ClassCastException if LogManager returns a SimpleLoggerContext. Fixes LOG4J2-167.rgoers
FixConfigurationFactory was adding factories on every call. Fixes LOG4J2-169.rgoers
FixModify ClassLoaderContextSelector to use the first ClassLoader in the child parent hierarchy that has a Context with a configuration to allow JSPs to use the WebApp's context and configuration. Fixes LOG4J2-161.rgoers
UnknownAdd RFC 5424 compliant escaping rules to RFC5424Layout. Fixes LOG4J2-158. Thanks to Scott Severtson.rgoers

Release 2.0-beta4 – 2013-01-28

FixLocalizedMessageTest fails on linux system. Fixes LOG4J2-156. Thanks to Andreas Born.ggregory
FixRollingFileAppender's FileRenameAction was throwing a NullPointerException if no directory was specified on the target file name. Fixes LOG4J2-152. Thanks to Remko Popma.rgoers
FixConvert all System.getProperty calls to use PropertiesUtil to suppress SecurityExceptions. Fixes LOG4J2-150.rgoers
FixThreadContextMapFilter was matching on the key instead of the value of the key. Fixes LOG4J2-147. Thanks to William Burns.rgoers
FixAllow FlumeAvroManager to initialize even if it cannot connect to an agent.rgoers
FixSMTPAppender will only cache filtered events. Fixes LOG4J2-149. Thanks to Scott Severtson.rgoers
FixAdd missing serial version IDs. Fixes LOG4J2-145.ggregory
FixNullPointerException in RFC5424Layout. Fixes LOG4J2-144.ggregory
FixMessagePatternConverter now returns "null" if the log message is null. Fixes LOG4J2-143.rgoers
FixSerialized LogEvents were not reset in the output stream causing them to deserialize incorrectly. Fixes LOG4J2-142.rgoers
FixFix null pointer exception in SocketAppender if no protocol is specified. The protocol will default to TCP for the SocketAppender and UDP for the SyslogAppender. Fixes LOG4J2-139.rgoers
AddAdded Log4j 2 to SLF4J adapter.rgoers
FixTypo in documentation of SocketAppender. Fixes LOG4J2-140. Thanks to Joern Huxhorn.ggregory
FixFix hang in Dumbster SMTP test server. Fixes LOG4J2-137.rgoers
UpdateAllow newlines to be escaped in Syslog and RFC5424 layouts. Allow Throwables to be included in the output from RFC5424Layout. Fixes LOG4J2-136. Thanks to Scott Severtson.rgoers
AddAdd SMTPAppender. Fixes LOG4J2-131. Thanks to Scott Severtson.rgoers
FixPatternLayout should format throwables without requiring a converter. Fixes LOG4J2-130.rgoers
AddAdded hostName and contextName to property map.rgoers
FixBaseConfiguration does not close the first appender. Fixes LOG4J2-135. Thanks to Ingo Feltes.ggregory
AddAdd MessageFormatMessage and FormattedMessage.rgoers
AddUse %red, %white, %blue, and so on in the console appender. Fixes LOG4J2-134.ggregory
AddAllow custom message creation via a message factory. Fixes LOG4J2-133.ggregory
FixAbstractLogger.catching(Throwable) checks for DEBUG level but logs at ERROR level. Fixes LOG4J2-132.ggregory
FixRoutingAppender was only creating a single appender for the default Route. Fixes LOG4J2-129.rgoers
FixAllow JMS appenders to recover if the queue or topic is unavailable. Fixes LOG4J2-126.rgoers
UpdateAdd follow attribute to Console Appender. Fixes LOG4J2-128.rgoers
FixAbstractLogger methods were not passing Markers to the isEnabled methods. Fixes LOG4J2-127.rgoers
AddAdded Flume Appender samples.rgoers
UpdateAdd unit test to verify exceptions are thrown when the socket connection fails. Fixes LOG4J2-122.rgoers
FixJMSQueue and JMSTopic Appenders did not allow name to be specified. Fixes LOG4J2-125.rgoers
FixEnhanced javadoc copyright statement. Fixes LOG4J2-111.rgoers
UpdateRenamed log4j12-api to log4j-1.2-api. Fixes LOG4J2-110.rgoers
FixTCPSocketManager would fail if the initial connection could not be established. Fixes LOG4J2-120.rgoers
FixA broken socket connection would cause the TCPSocketManager to continuously reconnect. Fixes LOG4J2-119.rgoers
FixThe example for ThreadContextMapFilter was incorrect. Fixes LOG4J2-123. Thanks to Olivier Lamy.rgoers
FixFile renaming was using the wrong date value. Enhanced DefaultRolloverStrategy to store newest files in highest index as well as lowest. Fixes LOG4J2-116.rgoers
FixThreadContext Map elements with null values are now ignored when constructing a Flume event and in the RFC5424 Layout. Fixes LOG4J2-115.rgoers
FixStructuredDataFilter createFilter was annotated with PluginAttr instead of PluginElement for the KeyValuePairs. Fixes LOG4J2-113.rgoers
FixStructuredDataMessage was validating the length of the values in the event Map instead of the lengths of the keys. Fixes LOG4J2-114. Thanks to Arkin Yetis.rgoers

Release 2.0-beta3 – 2012-11-11

FixFix NullPointerException in ClassLoaderContextSelector when no class is returned from the SecurityManager. Fixes LOG4J2-108.rgoers
UpdateAdd ability to customize the names of the Levels in the LevelPatternConverter. Fixes LOG4J2-105.rgoers
FixPatternParser was not properly handling adjacent nested options. Fixes LOG4J2-107.rgoers
FixAdd support for loading plugins inside the OSGi bundle. Fixes LOG4J2-95.rgoers
UpdateAdd ThreadContext.push(String format, Object... args). Fixes LOG4J2-85.rgoers
FixThe LogEvent was wrapping a ThrowableProxy with another ThrowableProxy when deserializing. Fixes LOG4J2-103. Thanks to Das Archive.rgoers
UpdateCreated combined jar to combine API and Core contents for users who only want the Log4j implementation.rgoers
FixConvert LogManager binding to use "regular" java properties instead of XML properties to workaround a bug in Oracle's xmlparserv2 jar. Fixes LOG4J2-104.rgoers
AddAdded PropertiesRewritePolicy and ability to define properties on a Logger. Fixes LOG4J2-28.rgoers
UpdateBuild pdf of user's guide. Fixes LOG4J2-87.rgoers
UpdateAdded font and fontSize parameters to HTMLLayout. Replace newlines in message with br tag. Fixes LOG4J2-29.rgoers
AddAdded ability to configure from an InputSource. Fixes LOG4J2-55.rgoers
FixThe Facility value was being improperly calculated. Fixes LOG4J2-102. Thanks to Emanuele Colombo.rgoers
FixA NullPointerException would occur if no format value was passed to the SyslogAppender. Fixes LOG4J2-101. Thanks to Emanuele Colombo.rgoers
FixMapRewritePolicy had an extra call to putAll that caused updates to behave like adds. Fixes LOG4J2-99. Thanks to Das Archive.rgoers
FixAvoid NPE when duplicate LoggerContextFactorys are present. Allow factories to specify a weight to allow real implementations to outrank test implementations. Provide a simple default LoggerContextFactory.rgoers
FixAdded several missing classes and methods for Log4j 1.x compatibility. Fixes LOG4J2-97.rgoers
FixInterpolator was not stripping Lookup key separator when trying to locate the default value for a variable. Fixes LOG4J2-94. Thanks to Denis Treskunov.rgoers
FixLog4j 1.2 Category.forcedLog was wrapping the message with an ObjectMessage even if the parameter was an ObjectMessage.rgoers

Release 2.0-beta2 – 2012-10-07

UpdateMade ParameterizedMessage, StringFormattedMessage and ThreadDumpMessage immutable. LocalizedMessage is immutable except that it will be updated with the logger name when it is added to the LogEvent.rgoers
FixDefaultConfiguration was not starting the Console Appender.rgoers
AddAdd interval and modulate options to TimeBasedTriggeringPolicy to allow more fine-grained control of when file rolling should occur. Fixes LOG4J2-35.rgoers
AddAdd support for filtering packages from stack traces. Fixes LOG4J2-58.rgoers
AddIf system property "disableThreadContextStack" is set pushes to the ThreadContext will be ignored. If system property "disableThreadContext" is set both puts and pushes will be ignored. Fixes LOG4J2-84.rgoers
AddIf system property "disableThreadContextMap" is set puts to the ThreadContext will be ignored. If system property "disableThreadContext" is set both puts and pushes will be ignored. Fixes LOG4J2-83.rgoers
AddAdd support for ANSI colors by adding the highlight and style pattern converters. Fix pattern parsing to allow nested patterns.rgoers
FixConverted DynamicThresholdFilter to use KeyValuePair. Fixed bugs in the Map-based filters to allow declaration of multiple values for a key to match the documentation. Fixes LOG4J2-92.rgoers
FixMany logging methods in AbstractLogger were set to an incorrect logging level. catching was using the THROWING marker and was set to debug instead of error. Fixes LOG4J2-88.rgoers
AddAllow the status logging to be directed to stderr or to a file.rgoers
FixLog4j 1.2 adapter's Category class was missing 3 log methods. Fixes LOG4J2-91.rgoers
FixIf the ThreadContext stack is empty the LogEvent will contain a null value to reduce the overhead of creating log events and in the size of the serialized object. Changed the ThreadContext stack to use a custom stack interface instead of java.util.Stack as that class is overly heavy. This change will cause an API incompatibility. Fixes LOG4J2-84.rgoers
FixIf the ThreadContext map is empty the LogEvent will contain a null value to reduce the overhead of creating log events and in the size of the serialized object. Fixes LOG4J2-83.rgoers
AddAdd getFormats to MultiformatMessage and allow StructuredDataMessage to format as XML.rgoers
FixAdd documentation on client vs server mode to performance page. Fixes LOG4J2-90.rgoers
FixMove variable substitution from PatternLayout to appropriate converters to improve performance.rgoers

Release 2.0-beta1 – 2012-09-18

AddAdded AsynchAppender.rgoers
FixPatternLayout was not honoring format modifiers. Fixes LOG4J-81.rgoers
FixCreated web module to allow web applications to include the Log4j context listener in WEB-INF/lib even if Log4j is in the container's class path. Allow locating the LoggerContext to include the ClassLoader. Updated the Loader utility to always choose the child ClassLoader. Verified in Jboss 5 and Tomcat.rgoers
FixMarkerFilter called MarkerManager.getMarker causing the Marker to be created during the processing of the configuration. This prevents the application from creating the Marker with any parents. MarkerWrapper in SLF4J-impl was getting a ClassCastException in instanceOf because the Marker isn't a MarkerWrapper. Fixes LOG4J2-82.rgoers
FixAllow Log4j 2 to be used as the implementation with SLF4J and SLF4J's jcl-over-slf4j by adding filtering to the log method in SLF4JLogger. Fixes LOG4J2-80. Thanks to Oliver Lamy.rgoers
FixLogFactoryImpl.setAttribute in the Commons Logging bridge got a NullPointerException when passed a null value. It will now remove the attribute. Fixes LOG4J2-78.rgoers
FixRoutingAppender was calling the stop method for each of its referenced Appenders and was calling the stop method of the default Appender a second time. It will now only call the stop method of Appenders it creates. Fixes LOG4J2-77.rgoers
FixRewriteAppender was calling the stop method of the referenced appender causing the referenced appender's manager to have its use count decremented too many times. Fixes LOG4J2-76.rgoers
FixLogger.error(Marker, Message, Throwable) was internally using Level.TRACE. Fixes LOG4J2-74.rgoers
FixEnhanced Log4jContextListener to accept a configuration file location. Modified FileConfigurationMonitor to monitor files configured that way. Fixed other reconfiguration related bugs. Tested in JBoss and Tomcat. Fixes LOG4J2-75.rgoers
FixNullPointerException in RollingFileManager when filePattern does not cause the file to be compressed. Fixes LOG4J2-72.rgoers
FixFileRenameAction did not create the parent directories of the archive files causing the rollover to fail. Fixes LOG4J2-71.rgoers
UpdateUpdate the versions of SLF4J and Logback.rgoers

Release 2.0-alpha2 – 2012-08-24

AddAdd getLogger(Class) to LogManager. Fixes LOG4J2-70.rgoers
AddAllow Flume agents to be embedded into the Flume Appender. Fixes LOG4J2-69.rgoers
AddAdd support for formatting using String.format(). Fixes LOG4J2-68.rgoers
AddAllow components besides core to create a PluginMap for faster plugin loading and not having to specify the plugin package in the configuration. Fixes LOG4J2-67.rgoers
FixFix compilation problems in Java 7. Fixes LOG4J2-64.rgoers
FixAllow variable substitution on the configuration attributes and on the root log level. Fixes LOG4J2-65.rgoers

Release 2.0-alpha1 – 2012-07-29

AddAdded ability to filter on the AppenderRef by adding either a level or a filter. Fixes LOG4J2-60. Thanks to Shane Kelly.rgoers
FixLevel.toLevel would throw an IllegalArgumentException instead of returning the default value. Fixes LOG4J2-56. Thanks to John Owen Atala.rgoers
FixRemove LoggerContext support for custom logger factories. All Loggers returned by LoggerContext should be compatible and of the same type. Fixes LOG4J2-51. Thanks to John Vasileff.rgoers
FixMake sure all application facing log methods use their own FQCN. This patch resolves a unit test failure for the %C pattern when using the Category logger. Fixes LOG4J2-50. Thanks to John Vasileff.rgoers