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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7214) Hadoop /usr/bin/groups equivalent
Date Wed, 13 Apr 2011 08:15:05 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13019245#comment-13019245
] 

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

Thanks a lot for the review, Daryn.

bq. Regarding "user existence", it looks like the logic is if UserGroupInformation.isSecurityEnabled()
is true, then an empty group list means "No such user". Does this mesh with your understanding
of S3?

I'm under the impression that enabling Kerberos support on a Hadoop S3 file system isn't currently
supported, so this isn't an issue.

> 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, hadoop-7214.2.txt, hadoop-7214.3.txt,
hadoop-7214.4.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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