Hello,

the process tree killer seems to fail on windows 7 while it works on a windows xp.
I install todays Jenkins ver. 1.527, add a node which runs windows 7, add a new job that runs the batch command "start calc" (which creates a spawned process) and tie it to this node.

The node connects to the master with
java -jar slave.jar -jnlpUrl http://10.216.47.91:8080/computer/win7/slave-agent.jnlp

When i start the job the console output shows:
d:\temp\workspace\1>start calc
d:\temp\workspace\1>exit 0
Process leaked file descriptors. See http://wiki.jenkins-ci.org/display/JENKINS/Spawning+processes+from+build for more information
Finished: SUCCESS
so far, so good

On the slave, the calculator opens and stays open. The console running slave.jar says:
Aug 14, 2013 5:22:56 PM hudson.Proc$LocalProc join
WARNING: Process leaked file descriptors. See http://wiki.jenkins-ci.org/display/JENKINS/Spawning+processes+from+build for more information
java.lang.Exception
at hudson.Proc$LocalProc.join(Proc.java:329)
at hudson.Launcher$RemoteLaunchCallable$1.join(Launcher.java:1003)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at hudson.remoting.RemoteInvocationHandler$RPCRequest.perform(RemoteInvocationHandler.java:299)
at hudson.remoting.RemoteInvocationHandler$RPCRequest.call(RemoteInvocationHandler.java:280)
at hudson.remoting.RemoteInvocationHandler$RPCRequest.call(RemoteInvocationHandler.java:239)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:326)
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 hudson.remoting.Engine$1$1.run(Engine.java:63)
at java.lang.Thread.run(Unknown Source)

This happens independently if i run java in a cmd.exe with or without admin privileges. If i execute the job on the master, the same happens.
When i look into the process list with process explorer, the calc.exe has the BUILD_ID set.
Can somebody reproduce this? Shouldn't the process tree killer find and terminate this process?
Thanks!