Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
MapReduce >> mail # user >> Problem running PI example in Hadoop 2.0.0

Copy link to this message
Re: Problem running PI example in Hadoop 2.0.0
On 8 August 2012 14:39, Arjun Reddy <[EMAIL PROTECTED]> wrote:

> I am trying to setup a small cluster using hadoop 2.0.0 and using PI
> example to validate the setup.  When I have 1 master and 1 slave the
> example works fine.  I am getting exceptions with the PI example when
> additional slave nodes are added to the cluster.  The syslogs for failed
> tasks are as follows.  Any ideas why this is happening.
> .
> 2012-08-08 15:41:30,492 WARN [main] org.apache.hadoop.mapred.YarnChild:
> Exception running child : java.net.ConnectException: Call From node2/
> to node2:45965 failed on connection exception:
> java.net.ConnectException: Connection refused; For more details see:
> http://wiki.apache.org/hadoop/ConnectionRefused
>         at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:727)
>         at org.apache.hadoop.ipc.Client.call(Client.java:1165)
>         at
> org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:224)
>         at $Proxy6.getTask(Unknown Source)
>         at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:123)
did you follow the link in this message?

If so, did you follow all the actions?