[ec2-fleet] java.util.concurrent.CancellationException
Alan Sparks
I’m using the current (1.17.1) of the ec2-fleet plugin. I’ve configured the plugin to use an autoscaling group. It generally works OK, except occasionally for unknown reasons it launches extra builder instances, wasting money.
When I see the issue happen, it logs the following to the Jenkins log. Does anyone know what this exception is telling me, why it would be happening?
Thanks in advance for any hints or suggestions.
-Alan
2020-01-08 19:51:07.553+0000 [id=39] SEVERE hudson.slaves.NodeProvisioner#lambda$update$6: Unexpected uncaught exception encountered while processing agent FleetNode-0
java.util.concurrent.CancellationException: Task was cancelled.
at com.google.common.util.concurrent.AbstractFuture$Sync.getValue(AbstractFuture.java:295)
at com.google.common.util.concurrent.AbstractFuture$Sync.get(AbstractFuture.java:276)
at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:111)
at hudson.slaves.NodeProvisioner.lambda$update$6(NodeProvisioner.java:236)
at hudson.model.Queue._withLock(Queue.java:1392)
at hudson.model.Queue.withLock(Queue.java:1269)
at hudson.slaves.NodeProvisioner.update(NodeProvisioner.java:223)
at hudson.slaves.NodeProvisioner.access$900(NodeProvisioner.java:63)
at hudson.slaves.NodeProvisioner$NodeProvisionerInvoker.doRun(NodeProvisioner.java:817)
at hudson.triggers.SafeTimerTask.run(SafeTimerTask.java:70)
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:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
2020-01-08 19:51:07.554+0000 [id=39] INFO c.a.j.e.NoDelayProvisionStrategy#apply: currentDemand 1 availableCapacity 0 (availableExecutors 0 connectingExecutors 0 plannedCapacitySnapshot 0 additionalPlannedCapacity 0)
