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https://issues.apache.org/jira/browse/HDFS-15641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17216690#comment-17216690
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Hongbing Wang commented on HDFS-15641:
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I add one test [^HDFS-15641.000.test.patch] to reproduce this deadlock. Patch
solving the problem will be attached later. [~hexiaoqiao] Could you help take
a look?
> DataNode could meet deadlock if invoke refreshNameNode
> ------------------------------------------------------
>
> Key: HDFS-15641
> URL: https://issues.apache.org/jira/browse/HDFS-15641
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.2.0
> Reporter: Hongbing Wang
> Assignee: Hongbing Wang
> Priority: Critical
> Attachments: HDFS-15641.000.test.patch,
> RefreshNameNode_DeadLock.jstack, RefreshNameNode_DeadLock.png
>
>
> DataNode could meet deadlock when invoke `hdfs dfsadmin -refreshNamenodes
> hostname:50020` to register a new namespace in federation env.
> The jstack is shown in RefreshNameNode_DeadLock.jstack.
> The specific process is shown in Figure RefreshNameNode_DeadLock.png
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