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Posted to dev@hive.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2017/08/09 00:21:00 UTC
[jira] [Created] (HIVE-17276) Check max shuffle size when
converting to dynamically partitioned hash join
Jesus Camacho Rodriguez created HIVE-17276:
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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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