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Posted to hdfs-dev@hadoop.apache.org by "Hongbing Wang (Jira)" <ji...@apache.org> on 2020/10/19 12:29:00 UTC

[jira] [Created] (HDFS-15641) DataNode could meet deadlock if invoke refreshNameNode

Hongbing Wang created HDFS-15641:
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             Summary: 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


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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