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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1766) Datanode is marked dead, but datanode process is alive and verifying blocks
Date Thu, 17 Mar 2011 21:10:29 GMT
Datanode is marked dead, but datanode process is alive and verifying blocks
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                 Key: HDFS-1766
                 URL: https://issues.apache.org/jira/browse/HDFS-1766
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: data-node
    Affects Versions: 0.23.0
            Reporter: Hairong Kuang
            Assignee: Hairong Kuang
             Fix For: 0.23.0


We have a datanode marked dead in the namenode, and it is not taking any traffic. But it is
verifying blocks continuously, so the DataNode process is definitely not dead. Jstack shows
that the main thread and the offerService thread are gone but the JVM stuck at waiting for
other threads to die. It seems to me that the offerService thread has died abnormally, for
example, by a runtime exception and it did not shut down other threads before exiting.

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