LuoGe created HADOOP-18041:
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Summary: Command to refresh auth to local rules without having to
restart the cluster
Key: HADOOP-18041
URL: https://issues.apache.org/jira/browse/HADOOP-18041
Project: Hadoop Common
Issue Type: Improvement
Reporter: LuoGe
when two kerberos cluster establish cross realm trust, we should set up
hadoop.security.auth_to_local parameter in both clusters, and then restart
cluster。restart namenode is very challenge thing for large cluster, so we can
add admin command to refresh auth to local rules without restart
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