This is almost always due to garbage collection issues. Turn on GC logging and see if that is the problem.
On Wed, Dec 22, 2010 at 2:25 AM, Chang Song <[email protected]> wrote: > > 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 > > > >
