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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1936) Updating the layout version from HDFS-1822 causes upgrade problems.
Date Tue, 17 May 2011 16:39:48 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13034869#comment-13034869
] 

Suresh Srinivas commented on HDFS-1936:
---------------------------------------

You might have been talking about this - Storage#PRE_RBW_LAYOUT_VERSION is not handled correctly.
For this, we may need to add complicated check - where we have to check -24 and later than
-33.

I think we could do this for trunk with isXSupported() in this jira. But I am reluctant to
make that big a change for 0.22 and wanted to get this done with smaller patch.

> Updating the layout version from HDFS-1822 causes upgrade problems.
> -------------------------------------------------------------------
>
>                 Key: HDFS-1936
>                 URL: https://issues.apache.org/jira/browse/HDFS-1936
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.22.0, 0.23.0
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
>            Priority: Blocker
>             Fix For: 0.22.0, 0.23.0
>
>         Attachments: HDFS-1936.22.patch, HDFS-1936.trunk.patch
>
>
> In HDFS-1822 and HDFS-1842, the layout versions for 203, 204, 22 and trunk were changed.
Some of the namenode logic that depends on layout version is broken because of this. Read
the comment for more description.

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