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