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From 刘明敏 <diveintotomor...@gmail.com>
Subject error when producer try to connect to zookeeper
Date Mon, 11 Jun 2012 12:35:13 GMT
The topology of our kafka cluster is 1 producer,3 broker servers and 2
consumers
The whole system runs well for several days,and yesterday we found that the
producer kept connect and disconnect and then re-connect to the zookeeper.

below are the log that I thought might be relevant
*
*
*producer(10.18.10.4):*
[2012-06-11 17:25:55,315] INFO Socket connection established to zk-node-1/
10.18.10.1:2181, initiating session (org.apache.zookeeper.ClientCnxn)
[2012-06-11 17:25:55,339] INFO Session establishment complete on
serverzk-node-1/
10.18.10.1:2181, sessionid = 0x1379e52e0de154d, negotiated timeout = 6000
(org.apache.zookeeper.ClientCnxn)
[2012-06-11 17:25:55,339] INFO zookeeper state changed (SyncConnected)
(org.I0Itec.zkclient.ZkClient)
[2012-06-11 17:27:00,220] INFO Client session timed out, have not heard
from server in 46827ms for sessionid 0x1379e52e0de154d, closing socket
connection and attempting reconnect (org.apache.zookeeper.      ClientCnxn)
[2012-06-11 17:27:00,320] INFO zookeeper state changed (Disconnected)
(org.I0Itec.zkclient.ZkClient)
[2012-06-11 17:27:00,988] INFO Unable to reconnect to ZooKeeper service,
session 0x1379e52e0de154d has expired, closing socket connection
(org.apache.zookeeper.ClientCnxn)


*zk node 1(10.18.10.1):*
25230 2012-06-11 17:25:55,365 - INFO  [CommitProcessor:1:NIOServerCnxn@1580]
- Established session 0x1379e52e0de154d with negotiated timeout 6000 for
client /10.18.10.4:36134    // 10.18.10.4 is producer
25231 2012-06-11 17:26:22,004 - INFO  [CommitProcessor:1:NIOServerCnxn@1435]
- Closed socket connection for client /10.18.10.4:36134 which had sessionid
0x1379e52e0de154d


*zk node 2:*
2012-06-11 17:26:22,001 - INFO  [SessionTracker:ZooKeeperServer@316] -
Expiring session 0x1379e52e0de154d, timeout of 6000ms exceeded
2012-06-11 17:26:22,001 - INFO  [ProcessThread:-1:PrepRequestProcessor@399]
- Processed session termination for sessionid: 0x1379e52e0de154d
2012-06-11 17:27:01,011 - INFO  [NIOServerCxn.Factory:
0.0.0.0/0.0.0.0:2181:NIOServerCnxn$Factory@251] - Accepted socket
connection from /10.18.10.4:25923
2012-06-11 17:27:01,012 - INFO  [NIOServerCxn.Factory:
0.0.0.0/0.0.0.0:2181:NIOServerCnxn@770] - Client attempting to renew
session 0x1379e52e0de154d at /10.18.10.4:25923
2012-06-11 17:27:01,012 - INFO  [NIOServerCxn.Factory:
0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1573] - Invalid session
0x1379e52e0de154dfor client
/10.18.10.4:25923, probably expired
2012-06-11 17:27:01,013 - INFO  [NIOServerCxn.Factory:
0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1435] - Closed socket connection for
client /10.18.10.4:25923 which had sessionid 0x1379e52e0de154d


*zk node 3:*
(content has been rotated when I remembered to copy the content from
log,while it is similar with zk node 1 and 2)

-- 
Best Regards

----------------------
刘明敏 | mmLiu

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