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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4867) metaSave NPEs when there are invalid blocks in repl queue.
Date Fri, 07 Jun 2013 01:28:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4867?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13677734#comment-13677734

Kihwal Lee commented on HDFS-4867:

[~shv]: It looks like the change was added to the CHANGES.TXT in mapreduce, not hdfs in branch-0.23.
> metaSave NPEs when there are invalid blocks in repl queue.
> ----------------------------------------------------------
>                 Key: HDFS-4867
>                 URL: https://issues.apache.org/jira/browse/HDFS-4867
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 0.23.7, 2.0.4-alpha, 0.23.8
>            Reporter: Kihwal Lee
>            Assignee: Plamen Jeliazkov
>             Fix For: 2.1.0-beta, 0.23.9
>         Attachments: HDFS-4867.branch-0.23.patch, HDFS-4867.branch-0.23.patch, HDFS-4867.branch-0.23.patch,
HDFS-4867.branch-0.23.patch, HDFS-4867.branch-2.patch, HDFS-4867.branch2.patch, HDFS-4867.branch2.patch,
HDFS-4867.branch2.patch, HDFS-4867.trunk.patch, HDFS-4867.trunk.patch, HDFS-4867.trunk.patch,
HDFS-4867.trunk.patch, testMetaSave.log
> Since metaSave cannot get the inode holding a orphaned/invalid block, it NPEs and stops
generating further report. Normally ReplicationMonitor removes them quickly, but if the queue
is huge, it takes very long time. Also in safe mode, they stay.

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