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Release Notes for MongoDB 2.6
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April 8, 2014
MongoDB 2.6 is now available. Key features include aggregation enhancements, text-search integration, query-engine improvements, a new write-operation protocol, and security enhancements.
Minor Releases
2.6.12 – Mar 24, 2016
- Fixed issue with MMAPv1 journaling where the “last sequence number” file (
lsn
file) may be ahead of what is synced to the data files: SERVER-22261 . - Fixed issue that permitted the creation of new role with the same name as a built-in role: SERVER-19284 .
- Fixed issue where some index operations running during an active migration may cause the migration operation to skip some documents: SERVER-22535 .
- All issues closed in 2.6.12
2.6.11 – Aug 12, 2015
- Improvements to query plan ranking SERVER-17815
- Improved ability for
mongos
to detect replica set failover and correctly route read operations to the new primary SERVER-18280 - Improved reporting of queries in
getMore
operation indb.currentOp()
and the database profiler SERVER-16265 - All issues closed in 2.6.11
2.6.10 – May 19, 2015
- Improve user cache invalidation enforcement on
mongos
SERVER-11980 - Provide correct rollbacks for collection creation SERVER-18211
- Allow user inserts into the
system.profile
collection SERVER-18211 - Fix to query system to ensure non-negation predicates get chosen over negation predicates for multikey index bounds construction SERVER-18364
- All issues closed in 2.6.10
2.6.9 – March 24, 2015
- Resolve connection handling related crash with
mongos
instances SERVER-17441 - Add server parameter to configure idle cursor timeout SERVER-8188
- Remove duplicated (orphan) documents from aggregation pipelines with
_id
queries in sharded clusters SERVER-17426 - Fixed crash in
geoNear
queries with multiple2dsphere
indexes SERVER-14723 - All issues closed in 2.6.9
2.6.8 – February 25, 2015
- Add
listCollections
command functionality to 2.6 shell and client SERVER-17087 copydb
/clone
commands can crash the server if a primary steps down SERVER-16599- Secondary fasserts trying to replicate an index SERVER-16274
- Query optimizer should always use equality predicate over unique index when possible SERVER-15802
- All issues closed in 2.6.8
2.6.7 – January 13, 2015
- Decreased
mongos
memory footprint when shards have several tags SERVER-16683 - Removed check for shard version if the primary server is down SERVER-16237
- Fixed: