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https://issues.apache.org/jira/browse/HDFS-2285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13101708#comment-13101708
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Konstantin Shvachko commented on HDFS-2285:
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I have not checked which of the problems exist in trunk. It would be good if
somebody verified.
> BackupNode should reject requests trying to modify namespace
> ------------------------------------------------------------
>
> Key: HDFS-2285
> URL: https://issues.apache.org/jira/browse/HDFS-2285
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.22.0
> Reporter: Konstantin Shvachko
> Fix For: 0.22.0
>
> Attachments: BNsafemode.patch
>
>
> I am trying to remove file from BackupNode using
> {code}hadoop fs -fs hdfs://backup.node.com:50100 -rm /README.txt{code}
> which is supposed to fail. But it seems to be hanging forever.
> Needs some investigation. It used to throw SafeModeException if I remember
> correctly.
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