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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1842) Cannot upgrade 0.20.203 to 0.21 with an editslog present
Date Tue, 19 Apr 2011 17:42:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1842?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13021679#comment-13021679
] 

Suresh Srinivas commented on HDFS-1842:
---------------------------------------

Upgrade to 0.21 will not corrupt the file system! 21 will not load the editlog and the upgrade
fails.

> Cannot upgrade 0.20.203 to 0.21 with an editslog present
> --------------------------------------------------------
>
>                 Key: HDFS-1842
>                 URL: https://issues.apache.org/jira/browse/HDFS-1842
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.20.203.0
>            Reporter: Allen Wittenauer
>            Priority: Blocker
>
> If a user installs 0.20.203 and then upgrades to 0.21 with an editslog present, 0.21
will corrupt the file system due to opcode re-usage.

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