Matt McCline commented on HIVE-14981:

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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