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https://issues.apache.org/jira/browse/YARN-3795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14581576#comment-14581576
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lachisis commented on YARN-3795:
--------------------------------

Yes, I have found "Len error" in zookeeper server as Following:
2015-06-05 06:06:52,976 [myid:2] - INFO 
[NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:ZookeeperServer@897] - auth success 
/134.41.33.88:49189
2015-06-05 06:06:53,007 [myid:2] - WARN 
[NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@354] - Exception 
causing close of session 0x34db2f72ac50c86 due to java.io.IoException: Len 
error 1113979
2015-06-05 06:06:53,008 [myid:2] - WARN 
[NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1001] - Close socket 
connection for client /134/41/33.88:49189 which bad sessionid 0x34db2f72ac50c86 

> ZKRMStateStore crashes due to IOException: Broken pipe
> ------------------------------------------------------
>
>                 Key: YARN-3795
>                 URL: https://issues.apache.org/jira/browse/YARN-3795
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.5.0
>            Reporter: lachisis
>            Priority: Critical
>
> 2015-06-05 06:06:54,848 INFO org.apache.zookeeper.ClientCnxn: Socket 
> connection established to dap88/134.41.33.88:2181, initiating session
> 2015-06-05 06:06:54,876 INFO org.apache.zookeeper.ClientCnxn: Session 
> establishment complete on server dap88/134.41.33.88:2181, sessionid = 
> 0x34db2f72ac50c86, negotiated timeout = 10000
> 2015-06-05 06:06:54,881 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore: 
> Watcher event type: None with state:SyncConnected for path:null for Service 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore in state 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore: STARTED
> 2015-06-05 06:06:54,881 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore: 
> ZKRMStateStore Session connected
> 2015-06-05 06:06:54,881 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore: 
> ZKRMStateStore Session restored
> 2015-06-05 06:06:54,881 WARN org.apache.zookeeper.ClientCnxn: Session 
> 0x34db2f72ac50c86 for server dap88/134.41.33.88:2181, unexpected error, 
> closing socket connection and attempting reconnect
> java.io.IOException: Broken pipe
>       at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
>       at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)
>       at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:94)
>       at sun.nio.ch.IOUtil.write(IOUtil.java:65)
>       at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:450)
>       at 
> org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:117)
>       at 
> org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:355)
>       at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1075)
> 2015-06-05 06:06:54,986 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore: 
> Watcher event type: None with state:Disconnected for path:null for Service 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore in state 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore: STARTED
> 2015-06-05 06:06:54,986 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore: 
> ZKRMStateStore Session disconnected
> 2015-06-05 06:06:55,278 INFO org.apache.zookeeper.ClientCnxn: Opening socket 
> connection to server dap87/134.41.33.87:2181. Will not attempt to 
> authenticate using SASL (unknown error)
> 2015-06-05 06:06:55,278 INFO org.apache.zookeeper.ClientCnxn: Socket 
> connection established to dap87/134.41.33.87:2181, initiating session
> 2015-06-05 06:06:55,330 INFO org.apache.zookeeper.ClientCnxn: Session 
> establishment complete on server dap87/134.41.33.87:2181, sessionid = 
> 0x34db2f72ac50c86, negotiated timeout = 10000
> 2015-06-05 06:06:55,343 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore: 
> Watcher event type: None with state:SyncConnected for path:null for Service 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore in state 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore: STARTED
> 2015-06-05 06:06:55,343 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore: 
> ZKRMStateStore Session connected
> 2015-06-05 06:06:55,344 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore: 
> ZKRMStateStore Session restored
> 2015-06-05 06:06:55,345 WARN org.apache.zookeeper.ClientCnxn: Session 
> 0x34db2f72ac50c86 for server dap87/134.41.33.87:2181, unexpected error, 
> closing socket connection and attempting reconnect
> java.io.IOException: Broken pipe
>       at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
>       at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)
>       at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:94)
>       at sun.nio.ch.IOUtil.write(IOUtil.java:65)
>       at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:450)
>       at 
> org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:117)
>       at 
> org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:355)
>       at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1075)



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