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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5077) NPE in FSNamesystem.commitBlockSynchronization()
Date Fri, 07 Feb 2014 23:09:23 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5077?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Konstantin Shvachko updated HDFS-5077:
--------------------------------------

       Resolution: Fixed
    Fix Version/s: 2.1.1-beta
     Hadoop Flags: Reviewed
           Status: Resolved  (was: Patch Available)

> NPE in FSNamesystem.commitBlockSynchronization()
> ------------------------------------------------
>
>                 Key: HDFS-5077
>                 URL: https://issues.apache.org/jira/browse/HDFS-5077
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.0.5-alpha
>            Reporter: Konstantin Shvachko
>            Assignee: Plamen Jeliazkov
>             Fix For: 2.1.1-beta
>
>         Attachments: HDFS-5077.patch, HDFS-5077_2.patch, HDFS-5077_3.patch, HDFS-5077_3_branch2dot0.patch
>
>
> NN starts a block recovery, which will synchronize block replicas on different DNs. In
the end one of DNs will report the list of the nodes containing the consistent replicas to
the NN via commitBlockSynchronization() call. The NPE happens if just before processing commitBlockSynchronization()
NN removes from active one of DNs that are then reported in the call.



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