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https://issues.apache.org/jira/browse/HDFS-16969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17707459#comment-17707459
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Viraj Jasani commented on HDFS-16969:
-------------------------------------
Could you try porting HDFS-16535 or if possible, deploy latest release 3.3.5?
> Restart DataNode but keep showing ClosedChannelException in DataNode
> ---------------------------------------------------------------------
>
> Key: HDFS-16969
> URL: https://issues.apache.org/jira/browse/HDFS-16969
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 3.3.2
> Reporter: Huibo Peng
> Priority: Major
>
> We use Hadoop 3.3.2 + HBase 2.3.6 in production environment. When restarting
> DataNode to enable some configs, the ClosedChannelException keep showing in
> DataNode log.
> {code:java}
> 2023-03-09 12:00:42,456 WARN [ShortCircuitCache_SlotReleaser]
> shortcircuit.DfsClientShmManager:
> EndpointShmManager(DatanodeInfoWithStorage[10.22.128.111:9866,DS-d0865093-7868-4d6b-8163-252f2dd4a40c,DISK],
> parent=ShortCircuitShmManager(250ff108)): error shutting down shm: got
> IOException calling shutdown(SHUT_RDWR)
> java.nio.channels.ClosedChannelException
> at
> org.apache.hadoop.util.CloseableReferenceCount.reference(CloseableReferenceCount.java:57)
> at
> org.apache.hadoop.net.unix.DomainSocket.shutdown(DomainSocket.java:393)
> at
> org.apache.hadoop.hdfs.shortcircuit.DfsClientShmManager$EndpointShmManager.shutdown(DfsClientShmManager.java:362)
> at
> org.apache.hadoop.hdfs.shortcircuit.ShortCircuitCache$SlotReleaser.run(ShortCircuitCache.java:241)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748) {code}
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