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https://issues.apache.org/jira/browse/SPARK-11252?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marcelo Vanzin resolved SPARK-11252.
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Resolution: Fixed
Assignee: Lianhui Wang
Fix Version/s: 1.6.0
> ShuffleClient should release connection after fetching blocks had been
> completed in yarn's external shuffle
> -----------------------------------------------------------------------------------------------------------
>
> Key: SPARK-11252
> URL: https://issues.apache.org/jira/browse/SPARK-11252
> Project: Spark
> Issue Type: Bug
> Components: Shuffle, YARN
> Reporter: Lianhui Wang
> Assignee: Lianhui Wang
> Fix For: 1.6.0
>
>
> ExternalShuffleClient of executors reserve its connection with yarn's
> NodeManager until application has been completed. so it will make NodeManager
> has many socket connections.
> in order to reduce network pressure of NodeManager's shuffleService, after
> registerWithShuffleServer or fetchBlocks have been completed in
> ExternalShuffleClient, connection for shuffleService needs to be closed.
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