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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-6148) LeaseManager crashes while initiating block recovery
Date Mon, 24 Mar 2014 17:16:47 GMT
Kihwal Lee created HDFS-6148:
--------------------------------

             Summary: LeaseManager crashes while initiating block recovery
                 Key: HDFS-6148
                 URL: https://issues.apache.org/jira/browse/HDFS-6148
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.4.0
            Reporter: Kihwal Lee
            Priority: Blocker


While running branch-2.4, the LeaseManager crashed with an NPE. This does not always happen
on block recovery.

{panel}
Exception in thread
"org.apache.hadoop.hdfs.server.namenode.LeaseManager$Monitor@5d66b728"
java.lang.NullPointerException
        at
org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoUnderConstruction$ReplicaUnderConstruction.isAlive(BlockInfoUnderConstruction.java:121)
        at
org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoUnderConstruction.initializeBlockRecovery(BlockInfoUnderConstruction.java:286)
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.internalReleaseLease(FSNamesystem.java:3746)
        at
org.apache.hadoop.hdfs.server.namenode.LeaseManager.checkLeases(LeaseManager.java:474)
        at
org.apache.hadoop.hdfs.server.namenode.LeaseManager.access$900(LeaseManager.java:68)
        at
org.apache.hadoop.hdfs.server.namenode.LeaseManager$Monitor.run(LeaseManager.java:411)
        at java.lang.Thread.run(Thread.java:722)
{panel}



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