[jira] Commented: (HADOOP-5742) Remove intentionally corrupt 0.13 directory layout creation

["dhruba borthakur (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-5742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12708784#action_12708784 ] 

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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