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https://issues.apache.org/jira/browse/SPARK-4236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14199539#comment-14199539
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Apache Spark commented on SPARK-4236:
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User 'aarondav' has created a pull request for this issue:
https://github.com/apache/spark/pull/3126
> External shuffle service must cleanup its shuffle files
> -------------------------------------------------------
>
> Key: SPARK-4236
> URL: https://issues.apache.org/jira/browse/SPARK-4236
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.2.0
> Reporter: Aaron Davidson
> Priority: Critical
>
> When external shuffle service is enabled, executors no longer cleanup their
> own shuffle files, as the external server can continue to serve them. The
> external serer must clean these files up once it knows that they will never
> be used again (i.e., when the application terminates or when Spark's
> ContextCleaner requests that they be deleted).
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