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Posted to dev@hive.apache.org by "Jason Dere (JIRA)" <ji...@apache.org> on 2017/04/27 22:08:04 UTC

[jira] [Created] (HIVE-16553) Change default value for hive.tez.bigtable.minsize.semijoin.reduction

Jason Dere created HIVE-16553:
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             Summary: Change default value for hive.tez.bigtable.minsize.semijoin.reduction
                 Key: HIVE-16553
                 URL: https://issues.apache.org/jira/browse/HIVE-16553
             Project: Hive
          Issue Type: Bug
          Components: Configuration
            Reporter: Jason Dere
            Assignee: Jason Dere


Current value is 1M rows, would like to bump this up to make sure we are not creating semjoin optimizations on dimension tables, since having too many semijoin optimizations can cause serialized execution of tasks if lots of tasks are waiting for semijoin optimizations to be computed.



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