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From "Ramya Sunil (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-3272) Lost NMs fail to rejoin
Date Tue, 25 Oct 2011 23:48:32 GMT
Lost NMs fail to rejoin
-----------------------

                 Key: MAPREDUCE-3272
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3272
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
    Affects Versions: 0.23.0
            Reporter: Ramya Sunil
             Fix For: 0.23.0


Lost nodemanagers fail to join back. 

When the NM is lost, RM log reads
{noformat}
INFO org.apache.hadoop.yarn.util.AbstractLivelinessMonitor: Expired:<host:port> Timed
out after 600 secs
INFO org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl: Processing <host:port>
of type EXPIRE
INFO org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl: Removed Node <host:port>
INFO org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl: <host:port> Node
Transitioned from RUNNING to LOST
{noformat}
When the NM joins back, RM log reads
{noformat}
INFO org.apache.hadoop.yarn.server.resourcemanager.ResourceTrackerService: Node not found
rebooting <host:port>
{noformat}

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