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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1727) fsck command can display command usage if user passes any illegal argument
Date Mon, 30 May 2011 03:44:47 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13040989#comment-13040989

Todd Lipcon commented on HDFS-1727:

Thanks for updating the patch. In the case that you pass two paths, though, it should print
a more informative error -- e.g "fsck: can only operate on on path at a time", rather than
the same "Illegal option" error.

> 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-1727.1.patch, 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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