Hi Yang Li, this is likely a straightforward issue - the ZK client limits the size of the response that it will accept. By default this is around 4mb. Notice the error message:
"Packet len 5362775 is out of range" basically what's happening is that your getChildren call is returning a huge packet size - likely you have a large number of children under "/dp/monitor_root/child/CDSkafkaSensor/msg". See this thread for a solution. Patrick On Tue, Oct 16, 2012 at 11:06 PM, yang.li <[email protected]> wrote: > > Hi, all: > > I'm in charge of a zookeeper cluster including six nodes. It worked well for > the last six months, > but yesterday when I want to list the children of a specific path > "/dp/monitor_root/child/CDSkafkaSensor/msg", > something is just wrong. Here is the dump info as shown below: > > [zk: zk-6:2181(CONNECTED) 1] ls /dp/monitor_root/child/CDSkafkaSensor/msg > 2012-10-17 13:47:28,719 [myid:] - WARN > [main-SendThread(m32p118.bfdabc.com:2181):ClientCnxn$SendThread@1057] - > Session 0x63a6d4272590001 for server m32p118.bfdabc.com/192.168.32.118:2181, > unexpected error, closing socket connection and attempting reconnect > java.io.IOException: Packet len5362775 is out of range! > at > org.apache.zookeeper.ClientCnxnSocket.readLength(ClientCnxnSocket.java:112) > at > org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:77) > at > org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:291) > at > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1035) > > WATCHER:: > > WatchedEvent state:Disconnected type:None path:null > Exception in thread "main" > org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode > = ConnectionLoss for /dp/monitor_root/child/CDSkafkaSensor/msg > at > org.apache.zookeeper.KeeperException.create(KeeperException.java:99) > at > org.apache.zookeeper.KeeperException.create(KeeperException.java:51) > at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1448) > at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1476) > at > org.apache.zookeeper.ZooKeeperMain.processZKCmd(ZooKeeperMain.java:717) > at > org.apache.zookeeper.ZooKeeperMain.processCmd(ZooKeeperMain.java:593) > at > org.apache.zookeeper.ZooKeeperMain.executeLine(ZooKeeperMain.java:365) > at org.apache.zookeeper.ZooKeeperMain.run(ZooKeeperMain.java:323) > at org.apache.zookeeper.ZooKeeperMain.main(ZooKeeperMain.java:282) > > I have tried many ways to solve this problem, but none of those works, even > the "super user" method. > Now neither can Ｉ list the node, nor can I delete it . So I really really > need a help. Thank you! > > > > yang.li
