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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2280) BackupNode fails with MD5 checksum Exception during checkpoint if BN's image is outdated.
Date Wed, 07 Sep 2011 00:45:11 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13098505#comment-13098505
] 

Konstantin Shvachko commented on HDFS-2280:
-------------------------------------------

tests are passing for 0.22

> BackupNode fails with MD5 checksum Exception during checkpoint if BN's image is outdated.
> -----------------------------------------------------------------------------------------
>
>                 Key: HDFS-2280
>                 URL: https://issues.apache.org/jira/browse/HDFS-2280
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.22.0
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>             Fix For: 0.22.0
>
>         Attachments: checksumException.patch
>
>
> If BN starts after NN made changes to namespace it fails with MD5 checksum Exception
during checkpoint when it reads new image upload from NN. This is happening because {{imageDigest}}
is not reset to null, but keeps the value of the originally loaded BN image.

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