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https://issues.apache.org/jira/browse/ZOOKEEPER-2092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14227838#comment-14227838
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Flavio Junqueira commented on ZOOKEEPER-2092:
---------------------------------------------
I can't really read the stack trace.... but just so that I understand, you're
trying to create a session against a server and it is hanging? As you say, it
should be following just fine to be able to accept connections.
> A zk instance can not be connected for ZooKeeperServer is not running
> ---------------------------------------------------------------------
>
> Key: ZOOKEEPER-2092
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2092
> Project: ZooKeeper
> Issue Type: Bug
> Affects Versions: 3.4.4
> Reporter: Liu Shaohui
> Attachments: stack
>
>
> In our 5 node zk cluster, we found a zk node always can not be connected.
> From the stack we found the ZooKeeperServer hung at waiting the server to be
> running. But the node is running normally and synced with the leader.
> {code}
> $ ./zkCli.sh -server 10.101.10.67:11000 ls /
> 2014-11-27 20:57:11,843 [myid:] - WARN
> [main-SendThread(lg-com-master02.bj:11000):ClientCnxn$SendThread@1089] -
> Session 0x0 for server lg-com-master02.bj/10.101.10.67:11000, unexpected
> error, closing socket connection and attempting reconnect
> java.io.IOException: Connection reset by peer
> at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
> at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
> at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
> at sun.nio.ch.IOUtil.read(IOUtil.java:192)
> at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:379)
> at
> org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:68)
> at
> org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:353)
> at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
> Exception in thread "main"
> org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode
> = ConnectionLoss for /
> 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:1469)
> at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1497)
> at
> org.apache.zookeeper.ZooKeeperMain.processZKCmd(ZooKeeperMain.java:726)
> at org.apache.zookeeper.ZooKeeperMain.processCmd(ZooKeeperMain.java:594)
> at org.apache.zookeeper.ZooKeeperMain.run(ZooKeeperMain.java:355)
> at org.apache.zookeeper.ZooKeeperMain.main(ZooKeeperMain.java:283)
> {code}
> ZooKeeperServer stack
> {code}
> "NIOServerCxn.Factory:0.0.0.0/0.0.0.0:11000" daemon prio=10
> tid=0x00007f60143f7800 nid=0x31fd in Object.wait() [0x00007f5fd4678000]
> java.lang.Thread.State: TIMED_WAITING (on object monitor)
> at java.lang.Object.wait(Native Method)
> at
> org.apache.zookeeper.server.ZooKeeperServer.submitRequest(ZooKeeperServer.java:634)
> - locked <0x00000007602756a0> (a
> org.apache.zookeeper.server.quorum.FollowerZooKeeperServer)
> at
> org.apache.zookeeper.server.ZooKeeperServer.submitRequest(ZooKeeperServer.java:626)
> at
> org.apache.zookeeper.server.ZooKeeperServer.createSession(ZooKeeperServer.java:525)
> at
> org.apache.zookeeper.server.ZooKeeperServer.processConnectRequest(ZooKeeperServer.java:841)
> at
> org.apache.zookeeper.server.NIOServerCnxn.readConnectRequest(NIOServerCnxn.java:410)
> at
> org.apache.zookeeper.server.NIOServerCnxn.readPayload(NIOServerCnxn.java:200)
> at
> org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:236)
> at
> org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:208)
> at java.lang.Thread.run(Thread.java:662)
> {code}
> Any suggestions about this problem? Thanks.
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