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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-1029) Image corrupt with number of files = 1
Date Thu, 12 Mar 2015 02:00:44 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1029?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Allen Wittenauer resolved HDFS-1029.
    Resolution: Fixed

This is likely a stale issue. Closing. Reopen if you feel otherwise.

> Image corrupt with number of files = 1
> --------------------------------------
>                 Key: HDFS-1029
>                 URL: https://issues.apache.org/jira/browse/HDFS-1029
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 0.20.1
>            Reporter: Todd Lipcon
> Last week I recovered a corrupt namenode image that was completely sane except that the
"number of files" in the header was set to 1, rather than the correct number (many million).
The NN in question had been running for some time, so I believe the 2NN uploaded this broken
image as a checkpoint. After this point, of course, no further checkpoints occurred, and the
NN failed to load its image upon restart.
> Not sure how this happens - my only thought is that we may need to add synchronization
on the nsCount field in INodeDirectoryWithQuota, but that's a long shot.

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