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https://issues.apache.org/jira/browse/HDFS-1936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13034373#comment-13034373
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Todd Lipcon commented on HDFS-1936:
-----------------------------------
Hi Suresh, sorry for the delay. I will try to get to this today - it's a little
messy to review - lots of different numbers flying by. I think it might
actually be easier to review to sequence this after the "isXSupported()"
refactor?
> 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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