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From "Prasad Wagle (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-5196) Command to refresh cache without having to restart the cluster
Date Thu, 02 Jun 2016 19:28:59 GMT
Prasad Wagle created YARN-5196:
----------------------------------

             Summary: Command to refresh cache without having to restart the cluster
                 Key: YARN-5196
                 URL: https://issues.apache.org/jira/browse/YARN-5196
             Project: Hadoop YARN
          Issue Type: Improvement
            Reporter: Prasad Wagle
            Priority: Minor


After changing hadoop.proxyuser.x.groups in core-site.xml, we ran:
dfsadmin -refreshSuperUserGroupsConfiguration 
rmadmin -refreshSuperUserGroupsConfiguration

However we are getting a warning:
 WARN [2016-06-02 17:54:50,914] ({pool-10-thread-1} SharedCacheClient.java[use]:137) - SCM
might be down. The exception is User: x is not allowed to impersonate y

Will be good to have a command to refresh the cache without having to restart the cluster.





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