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Posted to common-issues@hadoop.apache.org by "Arun C Murthy (JIRA)" <ji...@apache.org> on 2009/10/08 10:05:31 UTC

[jira] Updated: (HADOOP-4656) Add a user to groups mapping service

     [ https://issues.apache.org/jira/browse/HADOOP-4656?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arun C Murthy updated HADOOP-4656:
----------------------------------

    Attachment: HADOOP-4656.patch

Preliminary patch, with some testing done.

> Add a user to groups mapping service 
> -------------------------------------
>
>                 Key: HADOOP-4656
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4656
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 0.19.0
>            Reporter: Arun C Murthy
>            Assignee: Arun C Murthy
>         Attachments: HADOOP-4656.patch, HADOOP-4656_0_20090108.patch
>
>
> Currently the IPC client sends the UGI which contains the user/group information for the Server. However this represents the groups for the user on the client-end. The more pertinent mapping from user to groups is actually the one seen by the Server. Hence the client should only send the user and we should add a 'group mapping service' so that the Server can query it for the mapping.

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