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https://issues.apache.org/jira/browse/ZOOKEEPER-2530?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kezhu Wang resolved ZOOKEEPER-2530.
-----------------------------------
Resolution: Duplicate
> When zookeeper started in SSL mode, set a "get" watcher on a znode from zkCli
> client, restart the zkCli, the "Data" watcher still present. Trying removing
> that watcher fails saying no watcher available
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-2530
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2530
> Project: ZooKeeper
> Issue Type: Bug
> Components: server
> Affects Versions: 3.5.1
> Reporter: Rakesh Kumar Singh
> Priority: Major
>
> When zookeeper started in SSL mode, set a "get" watcher on a znode from zkCli
> client, restart the zkCli, the "Data" watcher still present. Trying removing
> that watcher fails saying no watcher available
> Steps to reproduce:-
> Start Zookeeper server in ssl mode by configuring all required ssl
> configuration
> Start zkCli and set a "Data" watcher "get -w "
> Restart the zkCli client
> Check the watcher. Still the Data watcher is available
> Try to remove the watcher using removewachers, it fails saying no watcher
> available.
> BLR1000007042:~ # echo wchs | netcat localhost 3181
> 1 connections watching 1 paths
> Total watches:1
> BLR1000007042:~ # echo wchs | netcat localhost 3181
> 1 connections watching 1 paths
> Total watches:1
> Client log as below:-
> [zk: localhost:2181(CONNECTED) 0] get -w /test
> hello1
> [zk: localhost:2181(CONNECTED) 1] quit
> 2016-08-25 14:22:00,706 [myid:] - INFO [main:ClientCnxnSocketNetty@201] -
> channel is told closing
> 2016-08-25 14:22:00,706 [myid:] - INFO [main:ZooKeeper@1110] - Session:
> 0x1019f8940e20000 closed
> 2016-08-25 14:22:00,706 [myid:] - INFO
> [main-EventThread:ClientCnxn$EventThread@542] - EventThread shut down for
> session: 0x1019f8940e20000
> 2016-08-25 14:22:00,707 [myid:] - INFO [New I/O worker
> #1:ClientCnxnSocketNetty$ZKClientHandler@377] - channel is disconnected: [id:
> 0x9dab735e, /127.0.0.1:57415 :> localhost/127.0.0.1:2181]
> 2016-08-25 14:22:00,707 [myid:] - INFO [New I/O worker
> #1:ClientCnxnSocketNetty@201] - channel is told closing
> BLR1000007042:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin #
> ./zkCli.sh
> /usr/bin/java
> Connecting to localhost:2181
> 2016-08-25 14:22:15,079 [myid:] - INFO [main:Environment@109] - Client
> environment:zookeeper.version=3.5.1-alpha--1, built on 08/18/2016 08:20 GMT
> 2016-08-25 14:22:15,083 [myid:] - INFO [main:Environment@109] - Client
> environment:host.name=BLR1000007042
> 2016-08-25 14:22:15,084 [myid:] - INFO [main:Environment@109] - Client
> environment:java.version=1.7.0_79
> 2016-08-25 14:22:15,086 [myid:] - INFO [main:Environment@109] - Client
> environment:java.vendor=Oracle Corporation
> 2016-08-25 14:22:15,086 [myid:] - INFO [main:Environment@109] - Client
> environment:java.home=/usr/java/jdk1.7.0_79/jre
> 2016-08-25 14:22:15,086 [myid:] - INFO [main:Environment@109] - Client
> environment:java.class.path=/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../build/classes:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../build/lib/*.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../lib/slf4j-log4j12-1.7.5.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../lib/slf4j-api-1.7.5.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../lib/servlet-api-2.5-20081211.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../lib/netty-3.7.0.Final.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../lib/log4j-1.2.16.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../lib/jline-2.11.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../lib/jetty-util-6.1.26.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../lib/jetty-6.1.26.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../lib/javacc.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../lib/jackson-mapper-asl-1.9.11.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../lib/jackson-core-asl-1.9.11.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../lib/commons-cli-1.2.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../lib/ant-eclipse-1.0-jvm1.2.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../zookeeper-3.5.1-alpha.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../src/java/lib/ant-eclipse-1.0-jvm1.2.jar:/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin/../conf:
> 2016-08-25 14:22:15,087 [myid:] - INFO [main:Environment@109] - Client
> environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
> 2016-08-25 14:22:15,087 [myid:] - INFO [main:Environment@109] - Client
> environment:java.io.tmpdir=/tmp
> 2016-08-25 14:22:15,087 [myid:] - INFO [main:Environment@109] - Client
> environment:java.compiler=
> 2016-08-25 14:22:15,087 [myid:] - INFO [main:Environment@109] - Client
> environment:os.name=Linux
> 2016-08-25 14:22:15,087 [myid:] - INFO [main:Environment@109] - Client
> environment:os.arch=amd64
> 2016-08-25 14:22:15,087 [myid:] - INFO [main:Environment@109] - Client
> environment:os.version=3.0.76-0.11-default
> 2016-08-25 14:22:15,087 [myid:] - INFO [main:Environment@109] - Client
> environment:user.name=root
> 2016-08-25 14:22:15,087 [myid:] - INFO [main:Environment@109] - Client
> environment:user.home=/root
> 2016-08-25 14:22:15,088 [myid:] - INFO [main:Environment@109] - Client
> environment:user.dir=/home/Rakesh/Zookeeper/18_Aug/zookeeper-3.5.1-alpha/bin
> 2016-08-25 14:22:15,088 [myid:] - INFO [main:Environment@109] - Client
> environment:os.memory.free=52MB
> 2016-08-25 14:22:15,090 [myid:] - INFO [main:Environment@109] - Client
> environment:os.memory.max=227MB
> 2016-08-25 14:22:15,090 [myid:] - INFO [main:Environment@109] - Client
> environment:os.memory.total=57MB
> 2016-08-25 14:22:15,095 [myid:] - INFO [main:ZooKeeper@716] - Initiating
> client connection, connectString=localhost:2181 sessionTimeout=30000
> watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@272f15b0
> Welcome to ZooKeeper!
> 2016-08-25 14:22:15,182 [myid:] - INFO
> [main-SendThread(localhost:2181):ClientCnxn$SendThread@1138] - Opening socket
> connection to server localhost/127.0.0.1:2181. Will not attempt to
> authenticate using SASL (unknown error)
> JLine support is enabled
> [INFO] Unable to bind key for unsupported operation: backward-delete-word
> [INFO] Unable to bind key for unsupported operation: backward-delete-word
> [INFO] Unable to bind key for unsupported operation: down-history
> [INFO] Unable to bind key for unsupported operation: up-history
> [INFO] Unable to bind key for unsupported operation: up-history
> [INFO] Unable to bind key for unsupported operation: down-history
> [INFO] Unable to bind key for unsupported operation: up-history
> [INFO] Unable to bind key for unsupported operation: down-history
> [INFO] Unable to bind key for unsupported operation: up-history
> [INFO] Unable to bind key for unsupported operation: down-history
> [INFO] Unable to bind key for unsupported operation: up-history
> [INFO] Unable to bind key for unsupported operation: down-history
> [zk: localhost:2181(CONNECTING) 0] 2016-08-25 14:22:15,502 [myid:] - INFO
> [main-SendThread(localhost:2181):ClientCnxnSocketNetty$ZKClientPipelineFactory@363]
> - SSL handler added for channel: null
> 2016-08-25 14:22:15,537 [myid:] - INFO [New I/O worker
> #1:ClientCnxn$SendThread@980] - Socket connection established, initiating
> session, client: /127.0.0.1:57420, server: localhost/127.0.0.1:2181
> 2016-08-25 14:22:15,540 [myid:] - INFO [New I/O worker
> #1:ClientCnxnSocketNetty$1@146] - channel is connected: [id: 0xfc4fe483,
> /127.0.0.1:57420 => localhost/127.0.0.1:2181]
> 2016-08-25 14:22:15,673 [myid:] - INFO [New I/O worker
> #1:ClientCnxn$SendThread@1400] - Session establishment complete on server
> localhost/127.0.0.1:2181, sessionid = 0x1019f8940e20001, negotiated timeout =
> 30000
> WATCHER::
> WatchedEvent state:SyncConnected type:None path:null
> [zk: localhost:2181(CONNECTED) 0] removewatches /test -a
> 2016-08-25 14:24:14,420 [myid:] - ERROR [New I/O worker #1:ClientCnxn@725] -
> Failed to find watcher!
> org.apache.zookeeper.KeeperException$NoWatcherException: KeeperErrorCode = No
> such watcher for /test
> at
> org.apache.zookeeper.ZooKeeper$ZKWatchManager.containsWatcher(ZooKeeper.java:377)
> at
> org.apache.zookeeper.ZooKeeper$ZKWatchManager.removeWatcher(ZooKeeper.java:252)
> at
> org.apache.zookeeper.WatchDeregistration.unregister(WatchDeregistration.java:58)
> at org.apache.zookeeper.ClientCnxn.finishPacket(ClientCnxn.java:712)
> at org.apache.zookeeper.ClientCnxn.access$1500(ClientCnxn.java:97)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:948)
> at
> org.apache.zookeeper.ClientCnxnSocketNetty$ZKClientHandler.messageReceived(ClientCnxnSocketNetty.java:419)
> at
> org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
> at
> org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
> at
> org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
> at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:296)
> at
> org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:462)
> at
> org.jboss.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:443)
> at
> org.jboss.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:303)
> at
> org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
> at
> org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
> at
> org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559)
> at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268)
> at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255)
> at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88)
> at
> org.jboss.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:109)
> at
> org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:312)
> at
> org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:90)
> at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)
> at
> org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
> at
> org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> KeeperErrorCode = No such watcher for /test
> [zk: localhost:2181(CONNECTED) 1]
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