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https://issues.apache.org/jira/browse/SPARK-9988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14725589#comment-14725589
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Shixiong Zhu commented on SPARK-9988:
-------------------------------------

{{ExternalSorter}} is coupled with {{SparkEnv}}, {{ShuffleMemoryManager}} and 
{{DiskBlockManager}}, and finally depends on {{SparkContext}}. [~rxin] any 
thoughts to avoid depending on {{SparkContext}}? I'm thinking that at least we 
need something like {{ShuffleMemoryManager}} and {{DiskBlockManager}}.

> Create local (external) sort operator
> -------------------------------------
>
>                 Key: SPARK-9988
>                 URL: https://issues.apache.org/jira/browse/SPARK-9988
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Reynold Xin
>
> Similar to the TungstenSort.



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