Erik, > > I've been unable to resolve this problem on my own so I've decided to ask > for help. I've pasted the logs I have for the DataNode on of the slave > nodes. The logs for TaskTracker are essentially the same (i.e. same > exception causing a shutdown). > > Any suggestions or hints as to what could be causing this problem? > > STARTUP_MSG: Starting DataNode > STARTUP_MSG: host = localhost.localdomain/127.0.0.1 > STARTUP_MSG: args = [] > STARTUP_MSG: version = 0.20.2 > STARTUP_MSG: build = > https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20 -r > 911707; compiled by 'chrisdo' on Fri Feb 19 08:07:34 UTC 2010 > ************************************************************/ > 2010-05-25 13:59:56,504 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: master1/192.168.151.1:54310. Already tried 0 time(s). > 2010-05-25 13:59:57,506 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: master1/192.168.151.1:54310. Already tried 1 time(s). > 2010-05-25 13:59:58,508 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: master1/192.168.151.1:54310. Already tried 2 time(s). > 2010-05-25 13:59:59,510 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: master1/192.168.151.1:54310. Already tried 3 time(s). > 2010-05-25 14:00:00,512 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: master1/192.168.151.1:54310. Already tried 4 time(s). > 2010-05-25 14:00:01,514 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: master1/192.168.151.1:54310. Already tried 5 time(s). > 2010-05-25 14:00:02,516 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: master1/192.168.151.1:54310. Already tried 6 time(s). > 2010-05-25 14:00:03,518 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: master1/192.168.151.1:54310. Already tried 7 time(s). > 2010-05-25 14:00:04,520 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: master1/192.168.151.1:54310. Already tried 8 time(s). > 2010-05-25 14:00:05,522 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: master1/192.168.151.1:54310. Already tried 9 time(s). > 2010-05-25 14:00:05,525 ERROR > org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Call > to master1/192.168.151.1:54310 failed on local exception: > java.net.NoRouteToHostException: No route to host
Can you connect to 192.168.151.1 from the host running your datanode - outside of Hadoop ? It seems like it is not reachable. Also, what platform are you running this on ? > at org.apache.hadoop.ipc.Client.wrapException(Client.java:775) > at org.apache.hadoop.ipc.Client.call(Client.java:743) > at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220) > at $Proxy4.getProtocolVersion(Unknown Source) > at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:359) > at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:346) > at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:383) > at org.apache.hadoop.ipc.RPC.waitForProxy(RPC.java:314) > at org.apache.hadoop.ipc.RPC.waitForProxy(RPC.java:291) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:269) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:216) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1283) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1238) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1246) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1368) > Caused by: java.net.NoRouteToHostException: No route to host > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) > at > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) > at > org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) > at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:404) > at > org.apache.hadoop.ipc.Client$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:860) > at org.apache.hadoop.ipc.Client.call(Client.java:720) > ... 13 more > > 2010-05-25 14:00:05,526 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG: > /************************************************************ > SHUTDOWN_MSG: Shutting down DataNode at localhost.localdomain/127.0.0.1 > > > Erik >
