This one is more of a frustration than anything else.
When running a test Trident Topology in IntelliJ I kept getting the following errors:
2328 [main-SendThread(localhost:2000)] WARN org.apache.zookeeper.ClientCnxn - Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
java.net.SocketException: Address family not supported by protocol family: connect
at sun.nio.ch.Net.connect(Native Method) ~[na:1.6.0_33]
at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:532) ~[na:1.6.0_33]
at org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:1050) ~[zookeeper-3.3.3.jar:3.3.3-1073969]
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1077) ~[zookeeper-3.3.3.jar:3.3.3-1073969]
After digging around for a while I found that this can safely be ignored. The cause is that the local ZooKeeper hasn't started up yet. Once it starts the errors go away.
1 comment:
i am getting same error, following is logs of my zookeeper, i am running wordcount topology for testing only, i am running in local mode.
2014-03-10 17:35:08,108 [myid:] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /127.0.0.1:36010
2014-03-10 17:35:08,132 [myid:] - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:ZooKeeperServer@793] - Connection request from old client /127.0.0.1:36010; will be dropped if server is in r-o mode
2014-03-10 17:35:08,134 [myid:] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:ZooKeeperServer@839] - Client attempting to establish new session at /127.0.0.1:36010
2014-03-10 17:35:08,146 [myid:] - INFO [SyncThread:0:ZooKeeperServer@595] - Established session 0x144abe0625b0002 with negotiated timeout 20000 for client /127.0.0.1:36010
2014-03-10 17:35:08,199 [myid:] - INFO [ProcessThread(sid:0 cport:-1)::PrepRequestProcessor@476] - Processed session termination for sessionid: 0x144abe0625b0002
2014-03-10 17:35:08,212 [myid:] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1001] - Closed socket connection for client /127.0.0.1:36010 which had sessionid 0x144abe0625b0002
2014-03-10 17:35:08,229 [myid:] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /127.0.0.1:36011
2014-03-10 17:35:08,235 [myid:] - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:ZooKeeperServer@793] - Connection request from old client /127.0.0.1:36011; will be dropped if server is in r-o mode
2014-03-10 17:35:08,237 [myid:] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:ZooKeeperServer@839] - Client attempting to establish new session at /127.0.0.1:36011
2014-03-10 17:35:08,255 [myid:] - INFO [SyncThread:0:ZooKeeperServer@595] - Established session 0x144abe0625b0003 with negotiated timeout 20000 for client /127.0.0.1:36011
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