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From "Rui Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-8536) Enable SkewJoinResolver for spark [Spark Branch]
Date Wed, 26 Nov 2014 01:38:14 GMT

    [ https://issues.apache.org/jira/browse/HIVE-8536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14225565#comment-14225565
] 

Rui Li commented on HIVE-8536:
------------------------------

Hi [~csun] thanks for your input.
I'm removing the dependency task in HIVE-8961.
bq. BTW, will it solves the issue in this JIRA completely? Is it possible that skew join is
mixed with multi-insert in the same query, and you still end up with more than one child tasks?
For {{skewjoin_noskew}}, it solves the problem because the query has no multi-insert. I also
make the resolver to just return rather than throw an exception when there're more than one
child. Do you think MR will suffer the same problem? I mean when skew join is mixed with multi-insert,
will there be multiple children task in MR?

> Enable SkewJoinResolver for spark [Spark Branch]
> ------------------------------------------------
>
>                 Key: HIVE-8536
>                 URL: https://issues.apache.org/jira/browse/HIVE-8536
>             Project: Hive
>          Issue Type: Improvement
>          Components: Spark
>            Reporter: Rui Li
>            Assignee: Rui Li
>         Attachments: HIVE-8536.1-spark.patch, HIVE-8536.2-spark.patch
>
>
> Sub-task of HIVE-8406



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