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From Jing Fan <fanjin...@gmail.com>
Subject Re: Zookeeper server null error when running giraph
Date Wed, 23 Jul 2014 21:51:52 GMT
Hi Vivek,

Giraph comes wtih Zookeeper itself so I didn't install it separately. I run
the same program several times. Sometimes it can succeed but most of the
time it will come with the Zookeeper null error.

Thanks.


On Wed, Jul 23, 2014 at 4:35 PM, Sardeshmukh, Vivek <
vivek-sardeshmukh@uiowa.edu> wrote:

>  Hi Jing,
>
>
>  Did you install Zookeeper? Is it running? If yes, then on which port?
> I'm not sure whether it is necessary to install Zookeeper separately
> but it's not that complicated to install so installed it and I didn't had
> any problem.
>
>
>  To install zookeeper :
>
> wget --no-check-certificate
> http://apache.mesi.com.ar/zookeeper/zookeeper-3.4.5/zookeeper-3.4.5.tar.gz
>
>
>  tar zxvf zookeeper-3.4.5.tar.gz
>
> cd zookeeper-3.4.5
>
> mv conf/zoo_sample.cfg conf/zoo.cfg
>
> sudo bin/zkServer.sh start
>
>
>  And when running a giraph job specify the zookeeper port-
> -Dgiraph.zkList=<hostname where u installed zookeeper>:2181
>
>
>
> Vivek
>   ------------------------------
> *From:* Jing Fan <fanjing09@gmail.com>
> *Sent:* Wednesday, July 23, 2014 4:14 PM
> *To:* user@giraph.apache.org
> *Subject:* Zookeeper server null error when running giraph
>
>  Hi,
>
>  When I run giraph, I always have following error message and the task
> will fail
>
>  14/07/23 23:10:21 INFO zookeeper.ClientCnxn: Opening socket connection to server localhost/127.0.0.1:22181.
Will not attempt to authenticate using SASL (unknown error)
> 14/07/23 23:10:21 WARN zookeeper.ClientCnxn: Session 0x1476505b6cd0009 for server null,
unexpected error, closing socket connection and attempting reconnect
> java.net.ConnectException: Connection refused
> 	at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> 	at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
> 	at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
> 	at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
>
>
> Does anyone know the reason and how to solve it?
>
>
> Thanks!
>
>

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