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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7603) Set default hdfs, mapred uid, and hadoop group gid for RPM packages
Date Fri, 02 Sep 2011 02:29:09 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13095724#comment-13095724

Allen Wittenauer commented on HADOOP-7603:

49 is not a safe gid on RHEL6.

Also, what happens when these uid/gids get used by something else?

> Set default hdfs, mapred uid, and hadoop group gid for RPM packages
> -------------------------------------------------------------------
>                 Key: HADOOP-7603
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7603
>             Project: Hadoop Common
>          Issue Type: Bug
>         Environment: Java, Redhat EL, Ubuntu
>            Reporter: Eric Yang
>            Assignee: Eric Yang
> Hadoop rpm package creates hdfs, mapped users, and hadoop group for automatically setting
up pid directory and log directory with proper permission.  The default headless users should
have a fixed uid, and gid numbers defined.
> Searched through the standard uid and gid on both Redhat and Debian distro.  It looks
> {noformat}
> uid: 201 for hdfs
> uid: 202 for mapred
> gid: 49 for hadoop
> {noformat}
> would be free for use.

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