Zookeeper server null error when running giraph

[Jing Fan]

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!