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Posted to dev@hive.apache.org by "Steven Wong (JIRA)" <ji...@apache.org> on 2013/10/02 07:41:25 UTC

[jira] [Created] (HIVE-5418) Integer overflow bug in ConditionalResolverCommonJoin.AliasFileSizePair

Steven Wong created HIVE-5418:
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             Summary: Integer overflow bug in ConditionalResolverCommonJoin.AliasFileSizePair
                 Key: HIVE-5418
                 URL: https://issues.apache.org/jira/browse/HIVE-5418
             Project: Hive
          Issue Type: Bug
    Affects Versions: 0.11.0
            Reporter: Steven Wong


Sometimes, auto map join conversion unexpectedly fails to choose map join over a common join, even if the auto map join conversion's size criterion is satisfied.

This is caused by an integer overflow bug in the method {{compareTo}} of the class {{ConditionalResolverCommonJoin.AliasFileSizePair}}.

The bug can be triggered when the big table size exceeds the small table size by at least 2**31 bytes.




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