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Posted to dev@hive.apache.org by "Vikram Dixit K (JIRA)" <ji...@apache.org> on 2013/09/11 19:49:51 UTC

[jira] [Created] (HIVE-5270) Enable hash joins using tez

Vikram Dixit K created HIVE-5270:
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             Summary: Enable hash joins using tez
                 Key: HIVE-5270
                 URL: https://issues.apache.org/jira/browse/HIVE-5270
             Project: Hive
          Issue Type: Sub-task
          Components: Tez
    Affects Versions: tez-branch
            Reporter: Vikram Dixit K
            Assignee: Vikram Dixit K


Since hash join involves replicating a hash table to all the map tasks, an equivalent operation needs to be performed in tez. In the tez world, such an operation is done via a broadcast edge (TEZ-410). We need to rework the planning and execution phases within hive for this.

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