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From ZUBAIR MIAN <mian_zub...@yahoo.com>
Subject Re: Problem with datanode(slave machine)
Date Tue, 19 Jan 2010 14:17:59 GMT
Have already done that.




________________________________
From: xiao yang <yangxiao9901@gmail.com>
To: general@hadoop.apache.org
Sent: Tue, January 19, 2010 6:09:57 PM
Subject: Re: Problem with datanode(slave machine)

Add hosts and ip address in /etc/hosts.
It may work.

On Tue, Jan 19, 2010 at 8:34 PM, ZUBAIR MIAN <mian_zubair@yahoo.com> wrote:

> 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
>
>
>
>



      
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