Nikunj Bansal created YARN-2346:
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             Summary: Add a 'status' command to yarn-daemon.sh
                 Key: YARN-2346
                 URL: https://issues.apache.org/jira/browse/YARN-2346
             Project: Hadoop YARN
          Issue Type: Improvement
    Affects Versions: 2.4.1, 2.4.0, 2.3.0, 2.2.0
            Reporter: Nikunj Bansal
            Priority: Minor


Adding a 'status' command to yarn-daemon.sh will be useful for finding out the 
status of yarn daemons.

Running the 'status' command should exit with a 0 exit code if the target 
daemon is running and non-zero code in case its not.




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