Task counters created by Hive during query execution


For Tez execution, %context is set to the mapper/reducer name. For other execution engines it is not included in the counter name.

Counter Name Description
RECORDS_IN[_%context] Input records read
RECORDS_OUT[_%context] Output records written
RECORDS_OUT_INTERMEDIATE[_%context] Records written as intermediate records to ReduceSink (which become input records to other tasks)
CREATED_FILES Number of files created


Deserialization errors encountered while reading data