Dear all I am facing problem wrt the datanode(at slave). In the log file of slave i am getting following message: "Call to master/192.168.0.1:54310 failed on local exception: java.net.NoRouteToHostException: No route to host at org.apache.hadoop.ipc.Client.wrapException" I am currently working on two node cluster. The network is working fine. Both machines can ping each other.
And Following is the log file of datanode. STARTUP_MSG: Starting DataNode STARTUP_MSG: host = slave/192.168.0.2 STARTUP_MSG: args = [] STARTUP_MSG: version = 0.20.1 STARTUP_MSG: build = http://svn.apache.org/repos/asf/hadoop/common/tags/release-0.20.1-rc1 -r 810220; compiled by 'oom' on Tue Sep 1 20:55:56 UTC 2009 ************************************************************/ 2010-01-15 18:50:56,435 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: master/192.168.0.1:54310. Already tried 0 time(s). 2010-01-15 18:50:57,436 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: master/192.168.0.1:54310. Already tried 1 time(s). 2010-01-15 18:50:58,437 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: master/192.168.0.1:54310. Already tried 2 time(s). 2010-01-15 18:50:59,438 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: master/192.168.0.1:54310. Already tried 3 time(s). 2010-01-15 18:51:00,439 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: master/192.168.0.1:54310. Already tried 4 time(s). 2010-01-15 18:51:01,440 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: master/192.168.0.1:54310. Already tried 5 time(s). 2010-01-15 18:51:02,441 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: master/192.168.0.1:54310. Already tried 6 time(s). 2010-01-15 18:51:03,443 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: master/192.168.0.1:54310. Already tried 7 time(s). 2010-01-15 18:51:04,444 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: master/192.168.0.1:54310. Already tried 8 time(s). 2010-01-15 18:51:05,445 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: master/192.168.0.1:54310. Already tried 9 time(s). 2010-01-15 18:51:05,449 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Call to master/192.168.0.1:54310 failed on local exception: java.net.NoRouteToHostException: No route to host at org.apache.hadoop.ipc.Client.wrapException(Client.java:774) at org.apache.hadoop.ipc.Client.call(Client.java:742) at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220) at $Proxy4.getProtocolVersion(Unknown Source) at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:359) at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:346) at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:383) at org.apache.hadoop.ipc.RPC.waitForProxy(RPC.java:314) at org.apache.hadoop.ipc.RPC.waitForProxy(RPC.java:291) at org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:269) at org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:216) at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1283) at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1238) at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1246) at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1368) Caused by: java.net.NoRouteToHostException: No route to host at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:592) at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:404) at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:304) at org.apache.hadoop.ipc.Client$Connection.access$1700(Client.java:176) at org.apache.hadoop.ipc.Client.getConnection(Client.java:859) at org.apache.hadoop.ipc.Client.call(Client.java:719) ... 13 more 2010-01-15 18:51:05,451 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down DataNode at slave/192.168.0.2 ************************************************************/ Please help me asap. regards maria
