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https://issues.apache.org/jira/browse/SPARK-8160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-8160.
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Resolution: Fixed
> Tungsten style external aggregation
> -----------------------------------
>
> Key: SPARK-8160
> URL: https://issues.apache.org/jira/browse/SPARK-8160
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Reynold Xin
> Assignee: Yin Huai
> Fix For: 1.5.0
>
>
> Support using external sorting to run aggregate so we can easily process
> aggregates where each partition is much larger than memory size.
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