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  1. Jenkins
  2. JENKINS-27957

NullPointerException in AdvancedQueueSorter

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    Description

      Hi,

      Our Jenkins server seems to get locked at some point in time.
      Many Jobs are in starvation, waiting for nodes with certain labels/label combinations.
      (i.e. Waiting for next available executor on ...)

      The log shows a lot of these entries:

      Apr 15, 2015 3:44:25 PM SEVERE hudson.triggers.SafeTimerTask run
      
      Timer task hudson.model.Queue$MaintainTask@5d00189f failed
      java.lang.NullPointerException
      	at jenkins.advancedqueue.sorter.AdvancedQueueSorter$2.compare(AdvancedQueueSorter.java:99)
      	at jenkins.advancedqueue.sorter.AdvancedQueueSorter$2.compare(AdvancedQueueSorter.java:81)
      	at java.util.TimSort.countRunAndMakeAscending(TimSort.java:329)
      	at java.util.TimSort.sort(TimSort.java:189)
      	at java.util.TimSort.sort(TimSort.java:173)
      	at java.util.Arrays.sort(Arrays.java:659)
      	at java.util.Collections.sort(Collections.java:217)
      	at jenkins.advancedqueue.sorter.AdvancedQueueSorter.sortBuildableItems(AdvancedQueueSorter.java:81)
      	at hudson.model.Queue.maintain(Queue.java:1135)
      	at hudson.model.Queue$MaintainTask.doRun(Queue.java:2197)
      	at hudson.triggers.SafeTimerTask.run(SafeTimerTask.java:54)
      	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
      	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
      	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
      	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
      	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
      	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
      	at java.lang.Thread.run(Thread.java:745)
      
      Feed
      

      and also some entries like

      java.lang.NullPointerException
      	at jenkins.advancedqueue.sorter.AdvancedQueueSorter.onLeft(AdvancedQueueSorter.java:157)
      	at jenkins.advancedqueue.sorter.AdvancedQueueSorterQueueListener.onLeft(AdvancedQueueSorterQueueListener.java:47)
      	at hudson.model.Queue$LeftItem.enter(Queue.java:2087)
      	at hudson.model.Queue.onStartExecuting(Queue.java:924)
      	at hudson.model.Executor.run(Executor.java:209)
      	at hudson.model.OneOffExecutor.run(OneOffExecutor.java:43)
      

      We see theses issues since we updated the Priority Sorter Plugin to version 2.11 (from version 2.9)

      Downgrading to version 2.9 seems to work fine!

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            emsa23 Magnus Sandberg
            tom_ghyselinck Tom Ghyselinck
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            Dates

              Created:
              Updated:
              Resolved: