Xiaoyu Yao created HADOOP-13771:
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Summary: 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/[email protected]
{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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