probably you should run "jps" everytime you start/stop NM/RM. just for you to know whether RM/NM started/stopped successfully or not. devaraj is right.. try checking RM logs..
Thanks, Omkar Joshi *Hortonworks Inc.* <http://www.hortonworks.com> On Tue, Jul 9, 2013 at 8:20 PM, Devaraj k <[email protected]> wrote: > Hi,**** > > ** ** > > Here NM is failing to connect to Resource Manager. **** > > ** ** > > Have you started the Resource Manager successfully? Or Do you see any > problem while starting Resource Manager in RM log..**** > > ** ** > > If you have started the Resource Manager in different machine other than > NM, you need to set this configuration for NM > “yarn.resourcemanager.resource-tracker.address” with RM resource tracker > address.**** > > ** ** > > ** ** > > Thanks**** > > Devaraj k**** > > ** ** > > *From:* ch huang [mailto:[email protected]] > *Sent:* 10 July 2013 08:36 > *To:* [email protected] > *Subject:* can not start yarn**** > > ** ** > > i am testing mapreducev2 ,i find i start NM error**** > > **** > > here is NM log content**** > > **** > > 2013-07-10 11:02:35,909 INFO > org.apache.hadoop.yarn.service.AbstractService: > Service:org.apache.hadoop.yarn.server.nodemanager.webapp.WebServer is > started. > 2013-07-10 11:02:35,909 INFO > org.apache.hadoop.yarn.service.AbstractService: Service:Dispatcher is > started. > 2013-07-10 11:02:35,930 INFO > org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl: Connecting > to ResourceManager at /0.0.0.0:8031 > 2013-07-10 11:02:37,209 INFO org.apache.hadoop.ipc.Client: Retrying > connect to server: 0.0.0.0/0.0.0.0:8031. Already tried 0 time(s); retry > policy is RetryUpToMaximumCountWithFi > xedSleep(maxRetries=10, sleepTime=1 SECONDS) > 2013-07-10 11:02:38,210 INFO org.apache.hadoop.ipc.Client: Retrying > connect to server: 0.0.0.0/0.0.0.0:8031. Already tried 1 time(s); retry > policy is RetryUpToMaximumCountWithFi > xedSleep(maxRetries=10, sleepTime=1 SECONDS) > 2013-07-10 11:02:39,211 INFO org.apache.hadoop.ipc.Client: Retrying > connect to server: 0.0.0.0/0.0.0.0:8031. Already tried 2 time(s); retry > policy is RetryUpToMaximumCountWithFi > xedSleep(maxRetries=10, sleepTime=1 SECONDS) > 2013-07-10 11:02:40,212 INFO org.apache.hadoop.ipc.Client: Retrying > connect to server: 0.0.0.0/0.0.0.0:8031. Already tried 3 time(s); retry > policy is RetryUpToMaximumCountWithFi > xedSleep(maxRetries=10, sleepTime=1 SECONDS) > 2013-07-10 11:02:41,213 INFO org.apache.hadoop.ipc.Client: Retrying > connect to server: 0.0.0.0/0.0.0.0:8031. Already tried 4 time(s); retry > policy is RetryUpToMaximumCountWithFi > xedSleep(maxRetries=10, sleepTime=1 SECONDS) > 2013-07-10 11:02:42,215 INFO org.apache.hadoop.ipc.Client: Retrying > connect to server: 0.0.0.0/0.0.0.0:8031. Already tried 5 time(s); retry > policy is RetryUpToMaximumCountWithFi > xedSleep(maxRetries=10, sleepTime=1 SECONDS) > 2013-07-10 11:02:43,216 INFO org.apache.hadoop.ipc.Client: Retrying > connect to server: 0.0.0.0/0.0.0.0:8031. Already tried 6 time(s); retry > policy is RetryUpToMaximumCountWithFi > xedSleep(maxRetries=10, sleepTime=1 SECONDS) > 2013-07-10 11:02:44,217 INFO org.apache.hadoop.ipc.Client: Retrying > connect to server: 0.0.0.0/0.0.0.0:8031. Already tried 7 time(s); retry > policy is RetryUpToMaximumCountWithFi > xedSleep(maxRetries=10, sleepTime=1 SECONDS) > 2013-07-10 11:02:45,218 INFO org.apache.hadoop.ipc.Client: Retrying > connect to server: 0.0.0.0/0.0.0.0:8031. Already tried 8 time(s); retry > policy is RetryUpToMaximumCountWithFi > xedSleep(maxRetries=10, sleepTime=1 SECONDS) > 2013-07-10 11:02:46,219 INFO org.apache.hadoop.ipc.Client: Retrying > connect to server: 0.0.0.0/0.0.0.0:8031. Already tried 9 time(s); retry > policy is RetryUpToMaximumCountWithFi > xedSleep(maxRetries=10, sleepTime=1 SECONDS) > 2013-07-10 11:02:46,226 ERROR > org.apache.hadoop.yarn.service.CompositeService: Error starting services > org.apache.hadoop.yarn.server.nodemanager.NodeManager > org.apache.avro.AvroRuntimeException: > java.lang.reflect.UndeclaredThrowableException > at > org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.start(NodeStatusUpdaterImpl.java:141) > at > org.apache.hadoop.yarn.service.CompositeService.start(CompositeService.java:68) > at > org.apache.hadoop.yarn.server.nodemanager.NodeManager.start(NodeManager.java:196) > at > org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:329) > at > org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:351) > Caused by: java.lang.reflect.UndeclaredThrowableException > at > org.apache.hadoop.yarn.exceptions.impl.pb.YarnRemoteExceptionPBImpl.unwrapAndThrowException(YarnRemoteExceptionPBImpl.java:135) > at > org.apache.hadoop.yarn.server.api.impl.pb.client.ResourceTrackerPBClientImpl.registerNodeManager(ResourceTrackerPBClientImpl.java:61) > at > org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.registerWithRM(NodeStatusUpdaterImpl.java:190) > at > org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.start(NodeStatusUpdaterImpl.java:137) > ... 4 more > Caused by: com.google.protobuf.ServiceException: > java.net.ConnectException: Call From CH34/192.168.10.34 to 0.0.0.0:8031failed > on connection exception: java.net.ConnectException: Connection > refused; For more details see: > http://wiki.apache.org/hadoop/ConnectionRefused > at > org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:212) > at $Proxy24.registerNodeManager(Unknown Source) > at > org.apache.hadoop.yarn.server.api.impl.pb.client.ResourceTrackerPBClientImpl.registerNodeManager(ResourceTrackerPBClientImpl.java:59) > ... 6 more > Caused by: java.net.ConnectException: Call From CH34/192.168.10.34 to > 0.0.0.0:8031 failed on connection exception: java.net.ConnectException: > Connection refused; For more details see: > http://wiki.apache.org/hadoop/ConnectionRefused > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native > Method)**** >
