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:justlo...@gmail.com] Sent: 10 July 2013 08:36 To: user@hadoop.apache.org 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<http://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<http://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<http://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<http://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<http://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<http://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<http://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<http://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<http://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<http://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<http://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<http://192.168.10.34> to 0.0.0.0:8031<http://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 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<http://192.168.10.34> to 0.0.0.0:8031<http://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)
