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https://issues.apache.org/jira/browse/HIVE-18744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16370352#comment-16370352
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Matt McCline commented on HIVE-18744:
-------------------------------------
The *last* row of a batch presented to VectorGroupByOperator (which calls
VectorHashKeyWrapperBatch.evaluate) has these row values:
[2051-09-16 08:48:38.0, 21117 = date 2027-10-26, ]
Somehow that one last timestamp value 2051-09-16 08:48:38.0 gets repeated in a
bunch of VectorHashKeyWrappers and should not be. Seems like a classic case of
a scratch object getting overwritten. But which one???
> Vectorization: VectorHashKeyWrapperBatch doesn't check repeated NULLs
> correctly
> -------------------------------------------------------------------------------
>
> Key: HIVE-18744
> URL: https://issues.apache.org/jira/browse/HIVE-18744
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Attachments: HIVE-18744.01.patch
>
>
> Logic for checking selectedInUse isRepeating case for NULL is broken.
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