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https://issues.apache.org/jira/browse/HIVE-14981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15579292#comment-15579292
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Matt McCline commented on HIVE-14981:
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It is ok. It has a Native Vector MapJoin parent. Normally, regular Vector
MapJoin creates a new output batch and so the column numbers are lower. But
the Native parent is taking the original input batch and adding scratch
columns. Thanks for noticing, but not a problem.
> Eliminate unnecessary MapJoin restriction in HIVE-11394
> -------------------------------------------------------
>
> Key: HIVE-14981
> URL: https://issues.apache.org/jira/browse/HIVE-14981
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 2.2.0
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Fix For: 2.2.0
>
> Attachments: HIVE-14981.01.patch
>
>
> No Empty Key restriction for Native Vector MapJoin added with HIVE-11394 is
> unnecessary. It caused Llap orc_llap.q test to timeout on Hive QA because
> regular VectorMapJoinOperator is too slow.
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