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From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-17276) Check max shuffle size when converting to dynamically partitioned hash join
Date Wed, 09 Aug 2017 00:21:00 GMT
Jesus Camacho Rodriguez created HIVE-17276:
----------------------------------------------

             Summary: Check max shuffle size when converting to dynamically partitioned hash
join
                 Key: HIVE-17276
                 URL: https://issues.apache.org/jira/browse/HIVE-17276
             Project: Hive
          Issue Type: Bug
          Components: Physical Optimizer
    Affects Versions: 3.0.0
            Reporter: Jesus Camacho Rodriguez
            Assignee: Jesus Camacho Rodriguez


Currently we only check that the max number of entries in the hashmap for a MapJoin surpasses
a certain threshold to decide whether to execute a dynamically partitioned hash join.

We would like to factor the size of the large input that we will shuffle for the dynamically
partitioned hash join into the cost model too.



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