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

Posted to dev@hive.apache.org by "Ashutosh Chauhan (JIRA)" <ji...@apache.org> on 2016/11/17 01:10:58 UTC

[jira] [Created] (HIVE-15227) Optimize join + gby into semijoin

Ashutosh Chauhan created HIVE-15227:
---------------------------------------

             Summary: Optimize join + gby into semijoin
                 Key: HIVE-15227
                 URL: https://issues.apache.org/jira/browse/HIVE-15227
             Project: Hive
          Issue Type: Bug
          Components: Logical Optimizer
            Reporter: Ashutosh Chauhan
            Assignee: Ashutosh Chauhan


Calcite has a rule which can do this transformation. Lets take advantage of this since Hive has native Left semi join operator.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)