[JIRA] (JENKINS-53384) Jobs complain no free executor or offline node

[papan...@wyssmann.com (JIRA)]

Title: Message Title

Adrian Wyssmann created an issue   Jenkins / JENKINS-53384 Jobs complain no free executor or offline node Issue Type: Bug Assignee: Oleg Nenashev Components: _unsorted Created: 2018-09-03 07:21 Environment: Jenkins 2.89.4 Windows OS Labels: jenkins Priority: Minor Reporter: Adrian Wyssmann Since two weeks we are experiencing that occasionally the Jenkins pipeline jobs are stating that there is no free executor or the node required to run the job is offline. Therefore the jobs are not executed but queued. When checking the respective node, it is running and has free executors. After restarting the master the situation recovers and queued builds start to run. I can see the following log entry on the master around the time when the jobs start stucking Sep 02, 2018 5:46:51 AM hudson.model.AsyncPeriodicWork$1 run INFO: Finished DockerContainerWatchdog Asynchronous Periodic Work. 1 ms Sep 02, 2018 5:49:59 AM jenkins.util.AtmostOneTaskExecutor$1 call WARNING: null java.lang.NullPointerException at hudson.plugins.buildblocker.BlockingJobsMonitor.checkNodeForQueueEntries(BlockingJobsMonitor.java:108) at hudson.plugins.buildblocker.BuildBlockerQueueTaskDispatcher.checkAccordingToProperties(BuildBlockerQueueTaskDispatcher.java:171) at hudson.plugins.buildblocker.BuildBlockerQueueTaskDispatcher.checkForBlock(BuildBlockerQueueTaskDispatcher.java:127) at hudson.plugins.buildblocker.BuildBlockerQueueTaskDispatcher.canTake(BuildBlockerQueueTaskDispatcher.java:110) at hudson.model.Queue$JobOffer.getCauseOfBlockage(Queue.java:273) at hudson.model.Queue.maintain(Queue.java:1597) at hudson.model.Queue$1.call(Queue.java:320) at hudson.model.Queue$1.call(Queue.java:317) at jenkins.util.AtmostOneTaskExecutor$1.call(AtmostOneTaskExecutor.java:108) at jenkins.util.AtmostOneTaskExecutor$1.call(AtmostOneTaskExecutor.java:98) at jenkins.security.ImpersonatingExecutorService$2.call(ImpersonatingExecutorService.java:71) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:110) at java.lang.Thread.run(Thread.java:748) Sep 02, 2018 5:50:00 AM hudson.triggers.SafeTimerTask run SEVERE: Timer task hudson.model.Queue$MaintainTask@495c6cda failed java.lang.NullPointerException at hudson.plugins.buildblocker.BlockingJobsMonitor.checkNodeForQueueEntries(BlockingJobsMonitor.java:108) at hudson.plugins.buildblocker.BuildBlockerQueueTaskDispatcher.checkAccordingToProperties(BuildBlockerQueueTaskDispatcher.java:171) at hudson.plugins.buildblocker.BuildBlockerQueueTaskDispatcher.checkForBlock(BuildBlockerQueueTaskDispatcher.java:127) at hudson.plugins.buildblocker.BuildBlockerQueueTaskDispatcher.canTake(BuildBlockerQueueTaskDispatcher.java:110) at hudson.model.Queue$JobOffer.getCauseOfBlockage(Queue.java:273) at hudson.model.Queue.maintain(Queue.java:1597) at hudson.model.Queue$MaintainTask.doRun(Queue.java:2851) at hudson.triggers.SafeTimerTask.run(SafeTimerTask.java:51) at jenkins.security.ImpersonatingScheduledExecutorService$1.run(ImpersonatingScheduledExecutorService.java:58) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) 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:748) In contrary to issue JENKINS-38729 which reports a similar problem (same error stack) we do not use the Build Blocker plugin. Add Comment   This message was sent by Atlassian Jira (v7.11.2#711002-sha1:fdc329d) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.