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https://issues.apache.org/jira/browse/SPARK-36483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17397639#comment-17397639
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Apache Spark commented on SPARK-36483:
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User 'Victsm' has created a pull request for this issue:
https://github.com/apache/spark/pull/33713
> Fix intermittent test failure due to netty dependency version bump
> ------------------------------------------------------------------
>
> Key: SPARK-36483
> URL: https://issues.apache.org/jira/browse/SPARK-36483
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 3.2.0
> Reporter: Min Shen
> Priority: Major
>
> In SPARK-35132, Spark's netty dependency version was bumped from 4.1.51 to
> 4.1.63.
> Since Netty version 4.1.52, a Netty specific
> io.netty.channel.StacklessClosedChannelException gets thrown when Netty's
> AbstractChannel encounters a closed channel.
> This can sometimes break the test
> org.apache.spark.network.RPCIntegrationSuite as reported
> [here|[https://github.com/apache/spark/pull/33613#issuecomment-896697401].]
> This is due to the hardcoded list of exception messages to check in
> RPCIntegrationSuite does not include this new StacklessClosedChannelException.
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