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https://issues.apache.org/jira/browse/HIVE-13240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15186443#comment-15186443
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Wataru Yukawa commented on HIVE-13240:
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Thank you for your comment.
But I switch to Hive on MapReduce in production environment, so now it's
difficult to test.
> GroupByOperator: Drop the hash aggregates when closing operator
> ---------------------------------------------------------------
>
> Key: HIVE-13240
> URL: https://issues.apache.org/jira/browse/HIVE-13240
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 1.3.0, 1.2.1, 2.0.0
> Reporter: Gopal V
> Assignee: Gopal V
> Attachments: HIVE-13240.1.patch
>
>
> GroupByOperator holds onto the Hash aggregates accumulated when the plan is
> cached.
> Drop the hashAggregates in case of error during forwarding to the next
> operator.
> Added for PTF, TopN and all GroupBy cases.
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