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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7214) Hadoop /usr/bin/groups equivalent
Date Thu, 07 Apr 2011 16:23:05 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13017025#comment-13017025
] 

Aaron T. Myers commented on HADOOP-7214:
----------------------------------------

{quote}
Thanks Aaron. According to the current convention, I think the usage string probably should
be

{code}
GROUPS_USAGE="-groups [<username...>]";
{code}
{quote}

Thanks for the review, Nicholas. I struggled with what format to use here. The existing conventions
for the {{chmod}}, {{chown}}, and {{chgrp}} Hadoop commands would seem to agree with what
I presently have in the patch, as would the man page for the Unix groups command:

{noformat}
SYNOPSIS
       groups [OPTION]... [USERNAME]...
{noformat}

That said, I don't feel strongly about this. Just pointing out that the correct solution is
non-obvious. If you think the format your proposed is correct, I'm happy to roll with that.

Please let me know what to do.

> Hadoop /usr/bin/groups equivalent
> ---------------------------------
>
>                 Key: HADOOP-7214
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7214
>             Project: Hadoop Common
>          Issue Type: New Feature
>    Affects Versions: 0.23.0
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>         Attachments: hadoop-7214.0.txt, hadoop-7214.1.txt
>
>
> Since user -> groups resolution is done on the NN and JT machines, there should be
a way for users to determine what groups they're a member of from the NN's and JT's perspective.

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