Adding consistency check at jobClose() when committing dynamic partitions
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Key: HIVE-1655
URL: https://issues.apache.org/jira/browse/HIVE-1655
Project: Hadoop Hive
Issue Type: Improvement
Reporter: Ning Zhang
Assignee: Ning Zhang
In case of dynamic partition insert, FileSinkOperator generated a directory for
a new partition and the files in the directory is named with '_tmp*'. When a
task succeed, the file is renamed to remove the "_tmp", which essentially
implement the "commit" semantics. A lot of exceptions could happen (process got
killed, machine dies etc.) could left the _tmp files exist in the DP directory.
These _tmp files should be deleted ("rolled back") at successful jobClose().
After the deletion, we should also delete any empty directories.
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