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Date: Tue, 5 Oct 2010 09:33:54 -0700
Message-ID: <AANLkTinFajLQR-VW4CA9g64xmnvN53=CiOP2JuOPF593@mail.gmail.com>
Subject: Re: Too many connections
From: Avinash Lakshman <avinash.lakshman@gmail.com>
To: zookeeper-user@hadoop.apache.org
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Thanks Patrick. But what does this mean? I see the log on server A telling
me "Too many connections from A - default is 10". Too many connection from A
to whom? I do not see who the other end of the connection is.

Cheers
Avinash

On Tue, Oct 5, 2010 at 9:27 AM, Patrick Hunt <phunt@apache.org> wrote:

> See this configuration param in the docs "maxClientCnxns":
>
> http://hadoop.apache.org/zookeeper/docs/current/zookeeperAdmin.html#sc_advancedConfiguration
>
> <
> http://hadoop.apache.org/zookeeper/docs/current/zookeeperAdmin.html#sc_advancedConfiguration
> >
> Patrick
>
> On Tue, Oct 5, 2010 at 8:10 AM, Avinash Lakshman <
> avinash.lakshman@gmail.com
> > wrote:
>
> > I find this happening in my observers node in the logs. The observers are
> > running in a different data center from where the ZK non-observers are
> > running. The only way to fix this seems to be restarting. How can I start
> > addressing this? Here is the stack trace.
> >
> > Too many connections from /10.30.84.207 - max is 10
> > WARN - Session 0x0 for server mybox.mydomain.com/10.30.84.207:5001,
> > unexpected error, closing socket connection and attempting reconnect
> > java.io.IOException: Connection reset by peer
> >        at sun.nio.ch.FileDispatcher.read0(Native Method)
> >        at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:21)
> >        at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:233)
> >        at sun.nio.ch.IOUtil.read(IOUtil.java:200)
> >        at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:236)
> >        at
> > org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:817)
> >        at
> > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1089)
> >
> > Please advice.
> >
> > Cheers
> > Avinash
> >
>

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