[jira] [Resolved] (HDFS-6148) LeaseManager crashes while initiating block recovery

["Kihwal Lee (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-6148?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kihwal Lee resolved HDFS-6148.
------------------------------

    Resolution: Duplicate

> 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: 2.3.0
>            Reporter: Kihwal Lee
>            Assignee: 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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