I think your session timeout value is too low, 4 sec. Your actual timeout for each ensemble is 1.333 sec, and it only retries twice until expiry.
Do you have a firewall or L4 switch between the client and the ZK ensemble? Maybe TCP idle session killer between in action. Chang Dec 22, 2010, 4:13 PM, shangmin 작성: > Hi all, > > I need your help! I'm a new user of ZooKeeper, I start a zookeeper client > which connects to ZooKeeper and create a EPHEMERAL node on it.I want to keep > this connection until my client program exit. But after some time, (30 > minutes to more than one hour), the connection was closed by ZooKeeper > server, and the EPHEMERAL node disappeared, the following is the related logs: > > 2010-12-22 14:44:32,002 - INFO [SessionTracker:zookeeperser...@315] - > Expiring session 0x12d0bd88fb20012, timeout of 4000ms exceeded > 2010-12-22 14:44:32,003 - INFO [ProcessThread:-1:preprequestproces...@385] - > Processed session termination for sessionid: 0x12d0bd88fb20012 > 2010-12-22 14:44:59,802 - INFO > [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:nioservercnxn$fact...@250] - > Accepted socket connection from /10.22.200.56:46376 > 2010-12-22 14:44:59,802 - INFO > [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:nioserverc...@769] - Client > attempting to renew session 0x12d0bd88fb20012 at /10.22.200.56:4 > 6376 > 2010-12-22 14:44:59,803 - INFO > [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:nioserverc...@1572] - Invalid > session 0x12d0bd88fb20012 for client /10.22.200.56:46376, prob > ably expired > 2010-12-22 14:44:59,803 - INFO > [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:nioserverc...@1434] - Closed > socket connection for client /10.22.200.56:46376 which had sess > ionid 0x12d0bd88fb20012 > > I want to know why this happens, and how to solve this problem if I want to > keep the connection until the program exits? > Thanks a lot! > > My zookeeper config file is: > > # The number of milliseconds of each tick > tickTime=2000 > # The number of ticks that the initial > # synchronization phase can take > initLimit=10 > # The number of ticks that can pass between > # sending a request and getting an acknowledgement > syncLimit=5 > # the directory where the snapshot is stored. > dataDir=/data/xce/zookeeper-data > # the port at which the clients will connect > clientPort=2181 > > server.1=10.22.206.154:2888:4000 > server.2=10.22.206.155:2888:4000 > > > -- > Jesse Shang 尚敏 > 人人网技术部 > > Mobile: +86 13811101579 > E-mail: [email protected] > Address: 26/F Jing An Center No.8 North Third Ring Road East Chao Yang > District,Beijing.CHINA 100028 > 北京市朝阳区北三环东路8号静安中心26层 100028 >
