Dear list,

I have a Jenkins master - slave setup. The master is a centos box, slave is 
a win 2008r2 box. I have a long running build (+/- 90 minutes) that 
sometimes builds, but starts to hang most of the times. The build runs find 
on developer's Linux / win 7 boxes with same JDK / maven version. So it has 
to be a jenkins thing.

This is what I get on the slave:

Thread DumpChannel reader thread: channel

"Channel reader thread: channel" Id=9 Group=main RUNNABLE (in native)
        at java.net.SocketInputStream.socketRead0(Native Method)
        at java.net.SocketInputStream.read(Unknown Source)
        at java.net.SocketInputStream.read(Unknown Source)
        at java.io.FilterInputStream.read(Unknown Source)
        at java.io.BufferedInputStream.fill(Unknown Source)
        at java.io.BufferedInputStream.read(Unknown Source)
        -  locked java.io.BufferedInputStream@41ed34a8
        at java.io.ObjectInputStream$PeekInputStream.peek(Unknown Source)
        at java.io.ObjectInputStream$BlockDataInputStream.peek(Unknown Source)
        at java.io.ObjectInputStream$BlockDataInputStream.peekByte(Unknown 
Source)
        at java.io.ObjectInputStream.readObject0(Unknown Source)
        at java.io.ObjectInputStream.readObject(Unknown Source)
        at hudson.remoting.Channel$ReaderThread.run(Channel.java:1127)


D:\data\hudson\tools\Java_1.6.29/bin/java -Xms512m -Xmx2048m 
-XX:PermSize=512m -XX:MaxPermSize=1024m -cp 
D:\data\hudson\maven3-agent.jar;D:\data\hudson\tools\maven-3.0.3\boot\plexus-classworlds-2.4.jar
 
org.jvnet.hudson.maven3.agent.Maven3Main D:\data\hudson\tools\maven-3.0.3 
D:\data\hudson\slave.jar D:\data\hudson\maven3-interceptor.jar 53670: 
stdout copier

"D:\data\hudson\tools\Java_1.6.29/bin/java -Xms512m -Xmx2048m -XX:PermSize=512m 
-XX:MaxPermSize=1024m -cp 
D:\data\hudson\maven3-agent.jar;D:\data\hudson\tools\maven-3.0.3\boot\plexus-classworlds-2.4.jar
 org.jvnet.hudson.maven3.agent.Maven3Main D:\data\hudson\tools\maven-3.0.3 
D:\data\hudson\slave.jar D:\data\hudson\maven3-interceptor.jar 53670: stdout 
copier" Id=9205 Group=main RUNNABLE (in native)
        at java.io.FileInputStream.readBytes(Native Method)
        at java.io.FileInputStream.read(Unknown Source)
        at java.io.BufferedInputStream.read1(Unknown Source)
        at java.io.BufferedInputStream.read(Unknown Source)
        -  locked java.io.BufferedInputStream@77215ab7
        at java.io.FilterInputStream.read(Unknown Source)
        at hudson.util.StreamCopyThread.run(StreamCopyThread.java:60)


main

"main" Id=1 Group=main WAITING on hudson.remoting.Channel@455d0ff7
        at java.lang.Object.wait(Native Method)
        -  waiting on hudson.remoting.Channel@455d0ff7
        at java.lang.Object.wait(Object.java:503)
        at hudson.remoting.Channel.join(Channel.java:798)
        at hudson.remoting.Launcher.main(Launcher.java:420)
        at hudson.remoting.Launcher.runOnSocket(Launcher.java:314)
        at hudson.remoting.Launcher.runAsTcpServer(Launcher.java:310)
        at hudson.remoting.Launcher.run(Launcher.java:203)
        at hudson.remoting.Launcher.main(Launcher.java:168)


Ping thread for channel hudson.remoting.Channel@455d0ff7:channel

"Ping thread for channel hudson.remoting.Channel@455d0ff7:channel" Id=10 
Group=main TIMED_WAITING
        at java.lang.Thread.sleep(Native Method)
        at hudson.remoting.PingThread.run(PingThread.java:86)


Pipe writer thread: channel

"Pipe writer thread: channel" Id=12 Group=main WAITING on 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@52f8a456
        at sun.misc.Unsafe.park(Native Method)
        -  waiting on 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@52f8a456
        at java.util.concurrent.locks.LockSupport.park(Unknown Source)
        at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown
 Source)
        at java.util.concurrent.LinkedBlockingQueue.take(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)


pool-1-thread-85

"pool-1-thread-85" Id=9227 Group=main RUNNABLE (in native)
        at java.net.SocketInputStream.socketRead0(Native Method)
        at java.net.SocketInputStream.read(Unknown Source)
        at java.net.SocketInputStream.read(Unknown Source)
        at java.io.FilterInputStream.read(Unknown Source)
        at 
hudson.remoting.ProxyInputStream$Buffer.read(ProxyInputStream.java:110)
        at 
hudson.remoting.ProxyInputStream$Chunk.perform(ProxyInputStream.java:132)
        at 
hudson.remoting.ProxyInputStream$Chunk.perform(ProxyInputStream.java:119)
        at hudson.remoting.Request$2.run(Request.java:287)
        at 
hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
        at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)

        Number of locked synchronizers = 1
        - java.util.concurrent.ThreadPoolExecutor$Worker@7141e2ae


pool-1-thread-86

"pool-1-thread-86" Id=9280 Group=main RUNNABLE
        at sun.management.ThreadImpl.dumpThreads0(Native Method)
        at sun.management.ThreadImpl.dumpAllThreads(Unknown Source)
        at hudson.Functions.getThreadInfos(Functions.java:861)
        at 
hudson.util.RemotingDiagnostics$GetThreadDump.call(RemotingDiagnostics.java:93)
        at 
hudson.util.RemotingDiagnostics$GetThreadDump.call(RemotingDiagnostics.java:89)
        at hudson.remoting.UserRequest.perform(UserRequest.java:118)
        at hudson.remoting.UserRequest.perform(UserRequest.java:48)
        at hudson.remoting.Request$2.run(Request.java:287)
        at 
hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
        at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)

        Number of locked synchronizers = 1
        - java.util.concurrent.ThreadPoolExecutor$Worker@16d19a86


Attach Listener

"Attach Listener" Id=4 Group=system RUNNABLE


Finalizer

"Finalizer" Id=3 Group=system WAITING on 
java.lang.ref.ReferenceQueue$Lock@3c1c2368
        at java.lang.Object.wait(Native Method)
        -  waiting on java.lang.ref.ReferenceQueue$Lock@3c1c2368
        at java.lang.ref.ReferenceQueue.remove(Unknown Source)
        at java.lang.ref.ReferenceQueue.remove(Unknown Source)
        at java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)


Reference Handler

"Reference Handler" Id=2 Group=system WAITING on 
java.lang.ref.Reference$Lock@5b589fac
        at java.lang.Object.wait(Native Method)
        -  waiting on java.lang.ref.Reference$Lock@5b589fac
        at java.lang.Object.wait(Object.java:503)
        at java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)

Can someone more knowledgeable shed a light on this. (if you need more info, 
don't hesitate to ask)
Many thanks in advance.

regards,

Kenneth 


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