[jira] [Commented] (SPARK-11252) ExternalShuffleClient should release connection after it had completed to fetch blocks from yarn's NameManager

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-11252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14969375#comment-14969375 ] 

Apache Spark commented on SPARK-11252:
--------------------------------------

User 'lianhuiwang' has created a pull request for this issue:
https://github.com/apache/spark/pull/9227

> ExternalShuffleClient should release connection after it had completed to fetch blocks from yarn's NameManager
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-11252
>                 URL: https://issues.apache.org/jira/browse/SPARK-11252
>             Project: Spark
>          Issue Type: Bug
>          Components: Shuffle, YARN
>            Reporter: Lianhui Wang
>
> 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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