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https://issues.apache.org/jira/browse/HIVE-13126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15159813#comment-15159813
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Gopal V commented on HIVE-13126:
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closeOp() is a dangerous place to put things in, since it can be called during
a failure condition.
This particular reset op should happen in initializeOp().
> Clean up MapJoinOperator properly to avoid object cache reuse with
> unintentional states
> ---------------------------------------------------------------------------------------
>
> Key: HIVE-13126
> URL: https://issues.apache.org/jira/browse/HIVE-13126
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 2.0.0
> Reporter: Wei Zheng
> Assignee: Wei Zheng
> Attachments: HIVE-13126.1.patch, HIVE-13126.2.patch
>
>
> For a given job, one task may reuse other task's object cache (plan cache)
> such as MapJoinOperator. This is fine. But if we have some dirty states left
> over, it may cause issue like wrong results.
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