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)
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