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From Robert Davis <dwb2812...@gmail.com>
Subject Re: Exceptions when establishing RPC
Date Tue, 03 Apr 2012 23:23:13 GMT
Hi Andre,

Thanks for the note. Yep, they are in the same group.

-Robert

On Tue, Apr 3, 2012 at 2:54 PM, André Kelpe
<efeshundertelf@googlemail.com>wrote:

> Hi Robert!
>
> > Caused by: java.net.ConnectException: Connection refused
> > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> > at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> > at
> >
> org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
> > at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:656)
> > at
> org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:434)
> > at
> org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:560)
> > at org.apache.hadoop.ipc.Client$Connection.access$2000(Client.java:184)
> > at org.apache.hadoop.ipc.Client.getConnection(Client.java:1202)
> > at org.apache.hadoop.ipc.Client.call(Client.java:1046)
> > ... 25 more
>
> You are running on EC2. Did you make sure that your security group
> allows all instances in the same group to connect to each other on any
> port? It seems that the internal firewall of amazon is blocking things
> for you.
>
> André
>

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