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From "Wei-Chiu Chuang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-12505) ShellBasedUnixGroupMapping should support group names with space
Date Fri, 23 Oct 2015 16:08:27 GMT
Wei-Chiu Chuang created HADOOP-12505:

             Summary: ShellBasedUnixGroupMapping should support group names with space
                 Key: HADOOP-12505
                 URL: https://issues.apache.org/jira/browse/HADOOP-12505
             Project: Hadoop Common
          Issue Type: Bug
            Reporter: Wei-Chiu Chuang
            Assignee: Wei-Chiu Chuang

In a typical configuration, group name is obtained from AD through SSSD/LDAP. AD permits group
names with space (e.g. "Domain Users").
Unfortunately, the present implementation of ShellBasedUnixGroupMapping parses the output
of shell command "id -Gn", and assumes group names are separated by space.
This could be achieved by using a combination of shell scripts, for example,
bash -c 'id -G weichiu | tr " " "\n" | xargs -I % getent group "%" | cut -d":" -f1'
But I am still looking for a more compact form, and potentially more efficient one.

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