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 <fanjin...@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<http://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!
