Hello, I've uploaded a patch with gerrit and jenkins returned the following error to me: Triggered by Gerrit: http://gerrit.ovirt.org/34555 No JDK named ?(Default)? found Building remotely on os1-rhel6-vm02 (el6 centos6 os1) in workspace /home/jenkins/workspace/ovirt-engine_master_unit-tests_gerrit Deleting project workspace... FATAL: hudson.remoting.RequestAbortedException: hudson.remoting.Channel$OrderlyShutdown: java.util.concurrent.TimeoutException: Ping started on 1414929198741 hasn't completed at 1414929438742 hudson.remoting.RequestAbortedException: hudson.remoting.RequestAbortedException: hudson.remoting.Channel$OrderlyShutdown: java.util.concurrent.TimeoutException: Ping started on 1414929198741 hasn't completed at 1414929438742 at hudson.remoting.RequestAbortedException.wrapForRethrow(RequestAbortedException.java:41) at hudson.remoting.RequestAbortedException.wrapForRethrow(RequestAbortedException.java:34) at hudson.remoting.Request.call(Request.java:174) at hudson.remoting.Channel.call(Channel.java:739) at hudson.FilePath.act(FilePath.java:911) at hudson.FilePath.act(FilePath.java:895) at hudson.FilePath.exists(FilePath.java:1343) at hudson.plugins.ws_cleanup.PreBuildCleanup.preCheckout(PreBuildCleanup.java:89) at jenkins.scm.SCMCheckoutStrategy.preCheckout(SCMCheckoutStrategy.java:76) at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:529) at hudson.model.Run.execute(Run.java:1740) at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43) at hudson.model.ResourceController.execute(ResourceController.java:88) at hudson.model.Executor.run(Executor.java:234) Caused by: hudson.remoting.RequestAbortedException: hudson.remoting.Channel$OrderlyShutdown: java.util.concurrent.TimeoutException: Ping started on 1414929198741 hasn't completed at 1414929438742 at hudson.remoting.Request.abort(Request.java:299) at hudson.remoting.Channel.terminate(Channel.java:802) at hudson.remoting.Channel$CloseCommand.execute(Channel.java:951) at hudson.remoting.Channel$2.handle(Channel.java:475) at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:60) Caused by: hudson.remoting.Channel$OrderlyShutdown: java.util.concurrent.TimeoutException: Ping started on 1414929198741 hasn't completed at 1414929438742 ... 3 more Caused by: Command close created at at hudson.remoting.Command.<init>(Command.java:56) at hudson.remoting.Channel$CloseCommand.<init>(Channel.java:945) at hudson.remoting.Channel$CloseCommand.<init>(Channel.java:943) at hudson.remoting.Channel.close(Channel.java:1026) at hudson.slaves.ChannelPinger$1.onDead(ChannelPinger.java:110) at hudson.remoting.PingThread.ping(PingThread.java:120) at hudson.remoting.PingThread.run(PingThread.java:81) Caused by: java.util.concurrent.TimeoutException: Ping started on 1414929198741 hasn't completed at 1414929438742 ... 2 more I believe this is because one of the VMs does not have a JDK installed? thank you, Amit.