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Posted to dev@hive.apache.org by "Vikram Dixit K (JIRA)" <ji...@apache.org> on 2014/03/21 04:59:42 UTC

[jira] [Created] (HIVE-6718) Splits grouping is optional

Vikram Dixit K created HIVE-6718:
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             Summary: Splits grouping is optional
                 Key: HIVE-6718
                 URL: https://issues.apache.org/jira/browse/HIVE-6718
             Project: Hive
          Issue Type: Improvement
          Components: Tez
    Affects Versions: 0.14.0
            Reporter: Vikram Dixit K


In hive-tez, we are always grouping splits in case of bucket map joins. This can be made optional. This affects utilization of the cluster as it affects parallelism. In some cases, it could be better to turn off grouping for increased parallelism as well. Making it optional gives better control to the administrator.



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