FAQ
Set default hdfs, mapred uid, and hadoop group gid for RPM packages
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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 like:

{noformat}
uid: 201 for hdfs
uid: 202 for mapred
gid: 49 for hadoop
{noformat}

would be free for use.

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postedSep 2, '11 at 2:00a
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