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https://issues.apache.org/jira/browse/SPARK-1700?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-1700.
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Resolution: Fixed
Fix Version/s: 1.0.0
The PR was https://github.com/apache/spark/pull/623 and says it was merged in
1.0.
> PythonRDD leaks socket descriptors during cancellation
> ------------------------------------------------------
>
> Key: SPARK-1700
> URL: https://issues.apache.org/jira/browse/SPARK-1700
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 0.9.0, 1.0.0
> Reporter: Aaron Davidson
> Assignee: Aaron Davidson
> Fix For: 1.0.0
>
>
> Sockets from Spark to Python workers are not cleaned up over the duration of
> a job, causing the total number of opened file descriptors to grow to around
> the number of partitions in the job. Usually these go away if the job is
> successful, but in the case of cancellation (and possibly exceptions, though
> I haven't investigated), the socket file descriptors remain indefinitely.
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