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From "Hong Zhiguo (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-3965) Add starup timestamp for nodemanager
Date Thu, 23 Jul 2015 10:34:04 GMT
Hong Zhiguo created YARN-3965:
---------------------------------

             Summary: Add starup timestamp for nodemanager
                 Key: YARN-3965
                 URL: https://issues.apache.org/jira/browse/YARN-3965
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: nodemanager
            Reporter: Hong Zhiguo
            Priority: Minor


We have startup timestamp for RM already, but don't for NM.
Sometimes cluster operator modified configuration of all nodes and kicked off command to restart
all NMs.  He found out it's hard for him to check whether all NMs are restarted.  Actually
there's always some NMs didn't restart as he expected, which leads to some error later due
to inconsistent configuration.

If we have startup timestamp for NM,  the operator could easily fetch it via NM webservice
and find out which NM didn't restart, and take mannaul action for it.



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