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https://issues.apache.org/jira/browse/YARN-11590?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Szilard Nemeth resolved YARN-11590.
-----------------------------------
Hadoop Flags: Reviewed
Resolution: Fixed
> RM process stuck after calling confStore.format() when ZK SSL/TLS is enabled,
> as netty thread waits indefinitely
> -----------------------------------------------------------------------------------------------------------------
>
> Key: YARN-11590
> URL: https://issues.apache.org/jira/browse/YARN-11590
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Reporter: Ferenc Erdelyi
> Assignee: Ferenc Erdelyi
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
>
> YARN-11468 enabled Zookeeper SSL/TLS support for YARN.
> Curator uses ClientCnxnSocketNetty for secured connection and the thread
> needs to be closed after calling confStore.format() to avoid the netty thread
> waiting indefinitely, which renders the RM unresponsive after deleting the
> confstore when started with the "-format-conf-store" arg.
> The unclosed thread, which keeps RM running:
> {code:java}
> 2023-10-10 12:13:01,000 INFO
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: The
> Thread[main-SendThread(ferdelyi-1.ferdelyi.root.hwx.site:2182),5,main]TIMED_WAITING
> is stands at [sun.misc.Unsafe.park(Native Method),
> java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215),
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078),
>
> java.util.concurrent.LinkedBlockingDeque.pollFirst(LinkedBlockingDeque.java:522),
> java.util.concurrent.LinkedBlockingDeque.poll(LinkedBlockingDeque.java:684),
> org.apache.zookeeper.ClientCnxnSocketNetty.doTransport(ClientCnxnSocketNetty.java:275),
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1289)]
> {code}
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