EOFException when terminating slaves programatically

[Carlos Sanchez]

Hi,

While writing the Kubernetes plugin, a plugin to dynamically start slaves in Kubernetes (something similar to the Docker one) I am getting EOFException when deleting the Pod (the container running the jenkins-slave jar)

The code for _terminate

            cloud.connect().deletePod(name, cloud.getNamespace());

            LOGGER.log(Level.INFO, "Terminated Kubernetes instance for slave {0}", name);

            toComputer().disconnect(OfflineCause.create(new Localizable(HOLDER, "offline")));

            LOGGER.log(Level.INFO, "Disconnected computer {0}", name);

https://github.com/jenkinsci/kubernetes-plugin/blob/master/src/main/java/org/csanchez/jenkins/plugins/kubernetes/KubernetesSlave.java#L75

I have tried in the reverse order, disconnect, then deletePod with the same result, even adding a sleep() call between both

I'm not sure what am I missing, if I should call something else to close the slave connection

Aug 26, 2015 4:19:17 PM org.csanchez.jenkins.plugins.kubernetes.KubernetesSlave _terminate

INFO: Terminating Kubernetes instance for slave f911b094-2674-4645-b066-f28726e4b3d8

Aug 26, 2015 4:19:17 PM hudson.remoting.AbstractByteArrayCommandTransport$1 handle

WARNING: Failed to construct Command

java.io.EOFException

at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2328)

at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2797)

at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:802)

at java.io.ObjectInputStream.<init>(ObjectInputStream.java:299)

at hudson.remoting.ObjectInputStreamEx.<init>(ObjectInputStreamEx.java:40)

at hudson.remoting.AbstractByteArrayCommandTransport$1.handle(AbstractByteArrayCommandTransport.java:61)

at org.jenkinsci.remoting.nio.NioChannelHub$2.run(NioChannelHub.java:594)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)

at java.util.concurrent.FutureTask.run(FutureTask.java:266)

at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:112)

at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)

at java.util.concurrent.FutureTask.run(FutureTask.java:266)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at java.lang.Thread.run(Thread.java:745)

Thanks in advance

[Jesse Glick]

On Wed, Aug 26, 2015 at 10:30 AM, Carlos Sanchez <car...@apache.org> wrote:
> I'm not sure what am I missing, if I should call something else to close the slave connection

Not sure, I also get a reproducible `EOFException` from `mock-slave`
tests. Kohsuke agreed something was wrong but the conversation stopped
there.