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Bug
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Resolution: Fixed
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Minor
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None
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ec2-1.50
Seeing this in the jenkins log a few times a day.
2020-02-19 11:20:35.289+0000 [id=21482] SEVERE h.i.i.InstallUncaughtExceptionHandler$DefaultUncaughtExceptionHandler#uncaughtException: A thread (EC2 alive slaves monitor thread/21482) died unexpectedly due to an uncaught exception, this may
leave your Jenkins in a bad way and is usually indicative of a bug in the code.
java.lang.NullPointerException
at hudson.plugins.ec2.util.MinimumInstanceChecker.lambda$countQueueItemsForAgentTemplate$8(MinimumInstanceChecker.java:67)
at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:174)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.LongPipeline.reduce(LongPipeline.java:461)
at java.util.stream.LongPipeline.sum(LongPipeline.java:419)
at java.util.stream.ReferencePipeline.count(ReferencePipeline.java:593)
at hudson.plugins.ec2.util.MinimumInstanceChecker.countQueueItemsForAgentTemplate(MinimumInstanceChecker.java:68)
at hudson.plugins.ec2.util.MinimumInstanceChecker.lambda$null$11(MinimumInstanceChecker.java:87)
at java.util.ArrayList.forEach(ArrayList.java:1257)
at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1082)
at hudson.plugins.ec2.util.MinimumInstanceChecker.lambda$checkForMinimumInstances$12(MinimumInstanceChecker.java:76)
at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
at java.util.Iterator.forEachRemaining(Iterator.java:116)
at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:485)
at hudson.plugins.ec2.util.MinimumInstanceChecker.checkForMinimumInstances(MinimumInstanceChecker.java:75)
at hudson.plugins.ec2.EC2SlaveMonitor.execute(EC2SlaveMonitor.java:41)
at hudson.model.AsyncPeriodicWork.lambda$doRun$0(AsyncPeriodicWork.java:100)
at java.lang.Thread.run(Thread.java:748)
Not sure if it's actually causing a problem though.
- is duplicated by
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- Closed
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[JENKINS-61146] ec2-plugin occassional traceback
Tristan Hill
added a comment - 1.8.0_242-b08 
Tobias Kahse
added a comment - I've experienced the same issue. It was caused by some of my builds not having a label because they have `agent any` defined in their pipeline.
The PR https://github.com/jenkinsci/ec2-plugin/pull/431 solves this issue by ignoring queued builds without any label.
Tobias Kahse
added a comment - I've experienced the same issue. It was caused by some of my builds not having a label because they have `agent any` defined in their pipeline.
The PR https://github.com/jenkinsci/ec2-plugin/pull/431 solves this issue by ignoring queued builds without any label. 
Raihaan Shouhell
added a comment - Given Tobias's PR I'm going to close this 
Hello stan3. What is the jdk version you are using?