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https://issues.apache.org/jira/browse/SPARK-983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14006221#comment-14006221
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Andrew Ash commented on SPARK-983:
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I think the main intention is to make the .sortByKey() call not require all
data to fit into memory. If you just want to sort data within each partition,
but not across partitions, that should already be possible using
.mapPartitions()
> External hashing & sorting support
> ----------------------------------
>
> Key: SPARK-983
> URL: https://issues.apache.org/jira/browse/SPARK-983
> Project: Spark
> Issue Type: New Feature
> Affects Versions: 0.9.0
> Reporter: Reynold Xin
> Assignee: Aaron Davidson
>
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