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https://issues.apache.org/jira/browse/SPARK-7078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14611140#comment-14611140
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Apache Spark commented on SPARK-7078:
-------------------------------------

User 'JoshRosen' has created a pull request for this issue:
https://github.com/apache/spark/pull/6444

> Cache-aware binary processing in-memory sort
> --------------------------------------------
>
>                 Key: SPARK-7078
>                 URL: https://issues.apache.org/jira/browse/SPARK-7078
>             Project: Spark
>          Issue Type: New Feature
>          Components: Shuffle
>            Reporter: Reynold Xin
>            Assignee: Josh Rosen
>
> A cache-friendly sort algorithm that can be used eventually for:
> * sort-merge join
> * shuffle
> See the old alpha sort paper: 
> http://research.microsoft.com/pubs/68249/alphasort.doc
> Note that state-of-the-art for sorting has improved quite a bit, but we can 
> easily optimize the sorting algorithm itself later.



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