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From Saeed Adel Mehraban <s.ade...@gmail.com>
Subject Re: Why none AppMaster node seeks IPCServer on itself.
Date Wed, 08 Jan 2014 20:48:42 GMT
There is no firewall.


On Wed, Jan 8, 2014 at 9:58 PM, Vinod Kumar Vavilapalli <
vinodkv@hortonworks.com> wrote:

> Checked the firewall rules?
>
> +Vinod
>
> On Jan 8, 2014, at 3:22 AM, Saeed Adel Mehraban <s.adel07@gmail.com>
> wrote:
>
> Hi all.
> I have an installation on Hadoop on 3 nodes, namely master, slave1 and
> slave2. When I try to run a job, assuming appmaster be on slave1, every map
> and reduce tasks which take place on slave2 will fail due to
> ConnectException.
> I checked the port which slave2 wants to connect to. It differs randomly
> each time, but when I look for it in slave1 logs, I can see this line:
> "2014-01-08 02:14:25,206 INFO [Socket Reader #1 for port 38226]
> org.apache.hadoop.ipc.Server: Starting Socket Reader #1 for port 38226"
> So there is a process on slave1 listening to this port, but slave2 tasks
> want to connect to this port on slave2.
>
> Do you know why is this happening?
>
>
>
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