Re: [Zookeeper-user] Lost connection
Am 26.06.2008 um 15:09 schrieb Flavio Junqueira: It looks like your client session is expiring. You can try increasing the session timeout value when creating the ZooKeeper object on your client. In any case, I would say it is good practice to have code on your client to deal with session expirations. Upon a session expiration, there is a call to your Watcher.process implementation indicating that it has expired. It happens again now I found the follwoing in one of the server log files: Failed to update data in zookeeper net.sf.katta.util.KattaException: unable to check path: /katta/nodes/1 at net.sf.katta.zk.ZKClient.exists(ZKClient.java:301) at net.sf.katta.node.Node$StatusUpdater.run(Node.java:730) at java.util.TimerThread.mainLoop(Timer.java:512) at java.util.TimerThread.run(Timer.java:462) Caused by: com.yahoo.zookeeper.KeeperException: KeeperErrorCode = ConnectionLoss at com.yahoo.zookeeper.ZooKeeper.exists(ZooKeeper.java:357) at net.sf.katta.zk.ZKClient.exists(ZKClient.java:299) ... 3 more Failed to update data in zookeeper net.sf.katta.util.KattaException: unable to check path: /katta/nodes/1 at net.sf.katta.zk.ZKClient.exists(ZKClient.java:301) at net.sf.katta.node.Node$StatusUpdater.run(Node.java:730) at java.util.TimerThread.mainLoop(Timer.java:512) at java.util.TimerThread.run(Timer.java:462) Caused by: com.yahoo.zookeeper.KeeperException: KeeperErrorCode = SessionExpired at com.yahoo.zookeeper.ZooKeeper.exists(ZooKeeper.java:357) at net.sf.katta.zk.ZKClient.exists(ZKClient.java:299) ... 3 more The session is expired and I try now to catch this state with event.getState() == Watcher.Event.KeeperStateExpired. Is there an example how to renew the session or do I have to create a new ZooKeeper object? Bye, martin. - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php ___ Zookeeper-user mailing list Zookeeper-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/zookeeper-user
[Zookeeper-user] Lost connection
Hi, After some days on running our application that uses zookeeper over 10 servers we get connection loss exception by writing into zookeeper. Caused by: com.yahoo.zookeeper.KeeperException: KeeperErrorCode = ConnectionLoss at com.yahoo.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:634) at net.sf.katta.zk.ZKClient.getChildren(ZKClient.java:321) ... 3 more We use zookeeper 2.2.0. We can reach the servers all the time. Is this known and how can we find out what the cause is? Thanks in advance for every answer. Bye, Martin. - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php ___ Zookeeper-user mailing list Zookeeper-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/zookeeper-user
Re: [Zookeeper-user] Lost connection
Hi Martin, Have you observed any session expiration in your logs? What is the value of tickTime you are using? -Flavio - Original Message From: Martin Schaaf [EMAIL PROTECTED] To: zookeeper-user@lists.sourceforge.net Sent: Thursday, June 26, 2008 12:05:21 PM Subject: [Zookeeper-user] Lost connection Hi, After some days on running our application that uses zookeeper over 10 servers we get connection loss exception by writing into zookeeper. Caused by: com.yahoo.zookeeper.KeeperException: KeeperErrorCode = ConnectionLoss at com.yahoo.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:634) at net.sf.katta.zk.ZKClient.getChildren(ZKClient.java:321) ... 3 more We use zookeeper 2.2.0. We can reach the servers all the time. Is this known and how can we find out what the cause is? Thanks in advance for every answer. Bye, Martin. - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php ___ Zookeeper-user mailing list Zookeeper-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/zookeeper-user - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php___ Zookeeper-user mailing list Zookeeper-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/zookeeper-user
Re: [Zookeeper-user] Lost connection
Am 26.06.2008 um 12:53 schrieb Flavio Junqueira: Hi Martin, Have you observed any session expiration in your logs? What is the value of tickTime you are using? tickTime is 2000 I found this in the logs 2008-06-25 07:26:42,003 WARN com.yahoo.zookeeper.server.PrepRequestProcessor: Processed session termination request for id: 11aba706af60019 2008-06-25 07:50:42,161 WARN com.yahoo.zookeeper.server.ZooKeeperServer: Closing: java.io.IOException: TIMED OUT at com.yahoo.zookeeper.ClientCnxn $SendThread.run(ClientCnxn.java:666) 2008-06-25 07:50:42,723 WARN com.yahoo.zookeeper.server.ZooKeeperServer: Closing: java.io.IOException: TIMED OUTat com.yahoo.zookeeper.ClientCnxn $SendThread.run(ClientCnxn.java:666) and very often this 2008-06-25 07:50:43,970 WARN com.yahoo.zookeeper.server.NIOServerCnxn: Connected to /10.201.8.204:50229 lastZxid 6 2008-06-25 07:50:43,970 WARN com.yahoo.zookeeper.server.NIOServerCnxn: Finished init of 11aba706af6: true 2008-06-25 07:50:43,970 WARN com.yahoo.zookeeper.server.NIOServerCnxn: Renewing session 11aba706af6 Bye, Martin Schaaf - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php ___ Zookeeper-user mailing list Zookeeper-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/zookeeper-user
