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https://issues.apache.org/jira/browse/HDFS-259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12923348#action_12923348
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Todd Lipcon commented on HDFS-259:
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Thanks for the feedback, Konst. I will add some code to check for an old
version and explain that they must upgrade to 0.20 first as a stepping stone,
if you think it's necessary.
I also realized there are some tests that need a little update. I'll upload a
new patch with these changes in the next couple days.
> Remove intentionally corrupt 0.13 directory layout creation
> -----------------------------------------------------------
>
> Key: HDFS-259
> URL: https://issues.apache.org/jira/browse/HDFS-259
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: 0.22.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: hdfs-259.txt
>
>
> 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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