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.
|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|