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https://issues.apache.org/jira/browse/HIVE-18744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16369344#comment-16369344
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Owen O'Malley commented on HIVE-18744:
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+1 for the fix, however you should add new unit test cases that cover the fix.
> 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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