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Posted to common-issues@hadoop.apache.org by "Xiaoyu Yao (JIRA)" <ji...@apache.org> on 2016/10/28 22:30:59 UTC
[jira] [Commented] (HADOOP-13771) Adding group mapping lookup
utility without dependency on HDFS namenode
[ https://issues.apache.org/jira/browse/HADOOP-13771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15616801#comment-15616801 ]
Xiaoyu Yao commented on HADOOP-13771:
-------------------------------------
Also propose to migrate existing {{hdfs groups}} command to {{hadoop groups}} without HDFS dependency.
> 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
>
> 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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