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MapReduce, mail # user - two name node both in standby state?why?


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two name node both in standby state?why?
ch huang 2013-07-26, 07:04
i have no idea,why?

2013-07-26 22:55:30,772 INFO org.apache.hadoop.http.HttpServer: Jetty bound
to port 50070
2013-07-26 22:55:30,772 INFO org.mortbay.log: jetty-6.1.26.cloudera.2
2013-07-26 22:55:31,001 WARN
org.apache.hadoop.security.authentication.server.AuthenticationFilter:
'signature.secret' configuration not set, using a random value as secret
2013-07-26 22:55:31,054 INFO org.mortbay.log: Started
SelectChannelConnector@node1:50070
2013-07-26 22:55:31,054 INFO
org.apache.hadoop.hdfs.server.namenode.NameNode: Web-server up at:
node1:50070
2013-07-26 22:55:31,057 INFO org.apache.hadoop.ipc.Server: IPC Server
Responder: starting
2013-07-26 22:55:31,058 INFO org.apache.hadoop.ipc.Server: IPC Server
listener on 8020: starting
2013-07-26 22:55:31,072 INFO
org.apache.hadoop.hdfs.server.namenode.NameNode: NameNode up at: node1/
192.168.142.129:8020
2013-07-26 22:55:31,072 INFO
org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Starting services
required for standby state
2013-07-26 22:55:31,074 INFO
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer: Will roll logs on
active node at node2/192.168.142.130:8020 every 120 seconds.
2013-07-26 22:55:31,084 INFO
org.apache.hadoop.hdfs.server.namenode.ha.StandbyCheckpointer: Starting
standby checkpoint thread...
Checkpointing active NN at node2:50070
Serving checkpoints at node1/192.168.142.129:50070
2013-07-26 22:57:31,112 INFO
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer: Triggering log
roll on remote NameNode node2/192.168.142.130:8020
2013-07-26 22:57:31,329 WARN
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer: Unable to trigger
a roll of the active NN
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.ipc.StandbyException):
Operation category JOURNAL is not supported in state standby
        at
org.apache.hadoop.hdfs.server.namenode.ha.StandbyState.checkOperation(StandbyState.java:87)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode$NameNodeHAContext.checkOperation(NameNode.java:1401)
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkOperation(FSNamesystem.java:871)
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.rollEditLog(FSNamesystem.java:4577)
        at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.rollEditLog(NameNodeRpcServer.java:756)
        at
org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolServerSideTranslatorPB.rollEditLog(NamenodeProtocolServerSideTranslatorPB.java:129)
        at
org.apache.hadoop.hdfs.protocol.proto.NamenodeProtocolProtos$NamenodeProtocolService$2.callBlockingMethod(NamenodeProtocolProtos.java:8762)
        at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:453)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1002)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1701)
+
Bing Jiang 2013-07-26, 07:22