You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@hive.apache.org by "Prasanth Jayachandran (JIRA)" <ji...@apache.org> on 2018/10/08 18:55:00 UTC

[jira] [Created] (HIVE-20713) Use percentage for join conversion size thresholds

Prasanth Jayachandran created HIVE-20713:
--------------------------------------------

             Summary: Use percentage for join conversion size thresholds
                 Key: HIVE-20713
                 URL: https://issues.apache.org/jira/browse/HIVE-20713
             Project: Hive
          Issue Type: Improvement
    Affects Versions: 4.0.0
            Reporter: Prasanth Jayachandran


There are many places in join conversion that rely on absolute byte sizes for join conversions (mapjoin, dynamic hashjoin etc.). When container sizes change, these join conversion thresholds have to be tuned accordingly according to the new container size. Instead, make the join conversions byte sizes a percentage/fraction of  container size. 



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)