Vihang Karajgaonkar created HIVE-19804:
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Summary: msck repair should hold locks
Key: HIVE-19804
URL: https://issues.apache.org/jira/browse/HIVE-19804
Project: Hive
Issue Type: Improvement
Reporter: Vihang Karajgaonkar
{msck repair table <tablename>}} does not hold locks. This can lead to weird
race conditions when concurrent sessions are running on the same table. For
example if two sessions run msck on the same table at the same time, they both
try to add partitions and they might both end up with failures due to
AlreadyExistsException. Another example would be if a query is running on a
partitioned table while some other session issues msck repair which add/drops
the partitions, it could trigger errors during query execution.
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