[jira] [Resolved] (SPARK-32663) TransportClient getting closed when there are outstanding requests to the server

["Mridul Muralidharan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-32663?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mridul Muralidharan resolved SPARK-32663.
-----------------------------------------
    Fix Version/s: 3.1.0
                   3.0.1
       Resolution: Fixed

Issue resolved by pull request 29492
[https://github.com/apache/spark/pull/29492]

> TransportClient getting closed when there are outstanding requests to the server
> --------------------------------------------------------------------------------
>
>                 Key: SPARK-32663
>                 URL: https://issues.apache.org/jira/browse/SPARK-32663
>             Project: Spark
>          Issue Type: Bug
>          Components: Shuffle
>    Affects Versions: 3.0.0
>            Reporter: Chandni Singh
>            Assignee: Attila Zsolt Piros
>            Priority: Major
>             Fix For: 3.0.1, 3.1.0
>
>
> The implementation of {{removeBlocks}} and {{getHostLocalDirs}} in {{ExternalBlockStoreClient}} closes the client after processing a response in the callback. 
> This is a cached client which will be re-used for other responses. There could be other outstanding request to the shuffle service, so it should not be closed after processing a response. 
> Seems like this is a bug introduced with SPARK-27651 and SPARK-27677. 
> The older methods  {{registerWithShuffleServer}} and {{fetchBlocks}} didn't close the client.
> cc [~attilapiros] [~vanzin] [~mridulm80]



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