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https://issues.apache.org/jira/browse/HDFS-1727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13038960#comment-13038960
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sravankorumilli commented on HDFS-1727:
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I have verified, these test failures are not related to this patch.
> fsck command can display command usage if user passes any illegal argument
> --------------------------------------------------------------------------
>
> Key: HDFS-1727
> URL: https://issues.apache.org/jira/browse/HDFS-1727
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 0.20.1, 0.23.0
> Reporter: Uma Maheswara Rao G
> Priority: Minor
> Attachments: HDFS-1727.patch
>
>
> In fsck command if user passes the arguments like
> ./hadoop fsck -test -files -blocks -racks
> In this case it will take / and will display whole DFS information regarding
> to files,blocks,racks.
> But here, we are hiding the user mistake. Instead of this, we can display the
> command usage if user passes any invalid argument like above.
> If user passes illegal optional arguments like
> ./hadoop fsck /test -listcorruptfileblocks instead of
> ./hadoop fsck /test -list-corruptfileblocks also we can display the proper
> command usage
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