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From "sathyavageeswaran" <sat...@morisonmenon.com>
Subject RE: Problem running PI example in Hadoop 2.0.0
Date Sat, 11 Aug 2012 04:09:16 GMT
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From: Arjun Reddy [mailto:arjunreddy0768@gmail.com] 
Sent: 10 August 2012 23:25
To: user@hadoop.apache.org
Subject: Re: Problem running PI example in Hadoop 2.0.0

 

I removed the entry 127.0.1.1 in /etc/hosts on all the nodes and the cluster
is working fine now.  Thank you very much for your help.

On Thu, Aug 9, 2012 at 3:15 PM, Steve Loughran <stevel@hortonworks.com>
wrote:

 

On 9 August 2012 10:31, Arjun Reddy <arjunreddy0768@gmail.com> wrote:

I did go through the 6 steps listed at the link and telnet to port 45965 is
failing.  Netstat -a shows nothing is listing on port 45965. 

 

 

That's a high number - I wonder if it's something transient that didn't
start.

 

I worry about the 127.0.1.1 number in the hostname -try editing /etc/hosts
to 127.0.0.1 to see if that helps; it could just be some listening on a
different port

 

 

We can run hadoop 1.0.3 version without any issues on this cluster and I am
new to 2.0.0 version.  I followed the document
http://hadoop.apache.org/common/docs/r2.0.0-alpha/hadoop-yarn/hadoop-yarn-si
te/ClusterSetup.html to setup the config files.  Is there any other good
document that describes how to set up version 2.0.0.  

 

Thanks

Arjun

On Thu, Aug 9, 2012 at 11:47 AM, Steve Loughran <stevel@hortonworks.com>
wrote:

 

On 8 August 2012 14:39, Arjun Reddy <arjunreddy0768@gmail.com> 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
node2/127.0.1.1 <http://127.0.1.1/>  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.jav
a:224)
        at $Proxy6.getTask(Unknown Source)
        at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:123)

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If so, did you follow all the actions?

 

 





 

-- 

Steve Loughran

Hortonworks Inc

stevel@hortonworks.com

skype: steve_loughran

tel: +1 408 400 3721 <tel:%2B1%20408%20400%203721> 

 

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