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https://issues.apache.org/jira/browse/HIVE-12399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15023065#comment-15023065
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Sergey Shelukhin commented on HIVE-12399:
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Can you post an RB?
> Native Vector MapJoin can encounter "Null key not expected in MapJoin" and
> "Unexpected NULL in map join small table" exceptions
> --------------------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-12399
> URL: https://issues.apache.org/jira/browse/HIVE-12399
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Attachments: HIVE-12399.01.patch, HIVE-12399.02.patch
>
>
> Instead of throw exception, just filter out NULLs in the Native Vector
> MapJoin operators.
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