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From "Xiaoyu Yao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13771) Adding group mapping lookup utility without dependency on HDFS namenode
Date Fri, 28 Oct 2016 23:11:58 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13771?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Xiaoyu Yao updated HADOOP-13771:
    Status: Patch Available  (was: Open)

> Adding group mapping lookup utility without dependency on HDFS namenode
> -----------------------------------------------------------------------
>                 Key: HADOOP-13771
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13771
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security, tools
>            Reporter: Xiaoyu Yao
>            Assignee: Xiaoyu Yao
>         Attachments: HADOOP-13771.00.patch
> We have {{hdfs groups}} command to troubleshoot issues related to users' group member
look up with Unix/LDAP. However, there are some limitation of this command: 1) it can only
be executed when namenode is running. 2) any change in the group mapping lookup configuration
needs a hdfs namenode restart, which is expensive. 
> This ticket is proposed to have a simple CLI utility like HadoopKerberosName
> {code}
> hadoop org.apache.hadoop.security.HadoopKerberosName nn/localhost@HDPDEV.DEV.COM
> {code}
> The CLI utility for group member lookup will have a usage like below without namenode
running or restart for configuration change.
> {code}
> hadoop org.apache.hadoop.security.Groups hdfs
> hdfs : [hadoop, hdfs]
> {code}

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