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https://issues.apache.org/jira/browse/HIVE-16208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15929844#comment-15929844
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Rajesh Balamohan commented on HIVE-16208:
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+1.
> Vectorization: ProcessingModeHashAggregate::sumBatchSize is never reset
> -----------------------------------------------------------------------
>
> Key: HIVE-16208
> URL: https://issues.apache.org/jira/browse/HIVE-16208
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.2.0
> Reporter: Gopal V
> Assignee: Gopal V
> Priority: Minor
> Attachments: HIVE-16208.1.patch
>
>
> When processing >2x the hash-table size in the vectorized group-by, the check
> for fall-back to streaming is wrong because {{sumBatchSize*minReduction}} is
> not reset when processing the next split.
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