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https://issues.apache.org/jira/browse/SPARK-7936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15556494#comment-15556494
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Xiao Li commented on SPARK-7936:
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Also close this JIRA since the PR has been closed. Thanks!
> Add configuration for initial size and limit of hash for aggregation
> --------------------------------------------------------------------
>
> Key: SPARK-7936
> URL: https://issues.apache.org/jira/browse/SPARK-7936
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Navis
> Priority: Minor
>
> Partial aggregation takes a lot of memory and mostly cannot be completed if
> it's not sliced into very small partitions (large in count). This patch is
> for limiting entry size for partial aggregation. Initial size for hash is
> just a bonus.
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