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https://issues.apache.org/jira/browse/HADOOP-5742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12708784#action_12708784
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dhruba borthakur commented on HADOOP-5742:
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The disk layout version is different from the release version.
For code maintainability purposes, we should deprecate log versions that
occured 5 release back seems like a good option. What log version was there for
release 0.13?
> Remove intentionally corrupt 0.13 directory layout creation
> -----------------------------------------------------------
>
> Key: HADOOP-5742
> URL: https://issues.apache.org/jira/browse/HADOOP-5742
> Project: Hadoop Core
> Issue Type: Task
> Components: dfs
> Reporter: Todd Lipcon
>
> Given that 0.13 is incredibly old at this point, I think the likelihood of
> anyone trying to start an 0.20+ namenode on an 0.13 directly layout is
> essentially nil. The intentionally-corrupt "${dfs.name.dir}/image/" directory
> just serves to confuse new users at this point, so I propose removing it.
> If no one objects, I'll submit a patch. If there are objections, I propose at
> least adding a README explaining its purpose (same text as in the corrupt
> fsimage file)
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