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https://issues.apache.org/jira/browse/HIVE-9927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15734608#comment-15734608
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wangwenli commented on HIVE-9927:
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the reason is because SkewJoinResolver will generate map join, and
CommonJoinResolver will optimize skewjoin plan again, this cause problem.
the simplest fix is just change the order of these two , put
CommonJoinResolver before SkewJoinResolver .
> MR doesn't produce correct result for runtime_skewjoin_mapjoin_spark
> --------------------------------------------------------------------
>
> Key: HIVE-9927
> URL: https://issues.apache.org/jira/browse/HIVE-9927
> Project: Hive
> Issue Type: Bug
> Reporter: Rui Li
>
> The test is added via HIVE-9659 to test runtime skew join with map join. It
> was mainly intended for spark but we found MR doesn't produce any result for
> the test.
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