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https://issues.apache.org/jira/browse/SPARK-4287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14201462#comment-14201462
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Andrew Or commented on SPARK-4287:
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Yeah that might be better, though you'll need to invent new messages and make
the driver talk to the external service as well.
> Add TTL-based cleanup in external shuffle service
> -------------------------------------------------
>
> Key: SPARK-4287
> URL: https://issues.apache.org/jira/browse/SPARK-4287
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.2.0
> Reporter: Andrew Or
>
> A problem with long-running SparkContexts using the external shuffle service
> is that its shuffle files may never be cleaned. This is because the
> ContextCleaner may no longer have executors to go through to clean up these
> files (they may be killed intentionally). We should have a TTL-based timeout
> that does this as a backup, defaulting to a timeout of a week or something.
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