java.util.concurrent.CancellationException

cnblogs.com | 2 months ago
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    Java 并发:Future FutureTask - 卖程序的小歪 - 博客园

    cnblogs.com | 2 months ago
    java.util.concurrent.CancellationException
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    Getting CancellationException

    GitHub | 2 years ago | sawickil
    java.util.concurrent.CancellationException
  3. 0

    [JIRA] [metrics-plugin] (JENKINS-32926) Recurring "Too many health check executions queued" warning in Jenkins log

    Google Groups | 10 months ago | nick....@bigasssolutions.com (JIRA)
    java.util.concurrent.CancellationException
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    I've recently started seeing this warning popping up in my Jenkins system log: Feb 12, 2016 3:26:43 PM WARNING jenkins.metrics.util.HealthChecksThreadPool dropOldestInQueue Too many health check executions queued, dropping oldest one. This may mean some health checks are taking too long to execute: jenkins.metrics.util.HealthChecksThreadPool@3cf11acf[Running, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 503], queue size=1, health checks=[disk-space, plugins, temporary-space, thread-deadlock] (4) [java.util.concurrent.FutureTask@8afd366] Feb 12, 2016 3:26:43 PM WARNING com.codahale.metrics.health.HealthCheckRegistry runHealthChecks Error executing health check thread-deadlock java.util.concurrent.CancellationException at java.util.concurrent.FutureTask.report(FutureTask.java:121) at java.util.concurrent.FutureTask.get(FutureTask.java:188) at com.codahale.metrics.health.HealthCheckRegistry.runHealthChecks(HealthCheckRegistry.java:102) at jenkins.metrics.api.Metrics$HealthChecker.execute(Metrics.java:592) at jenkins.metrics.api.Metrics$HealthChecker.access$500(Metrics.java:402) at jenkins.metrics.api.Metrics$HealthChecker$3.run(Metrics.java:532) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) 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) I only noticed it today but I look at the logs every couple of days at least, and I haven't seen it until now. A Google search doesn't return any other instances of it appearing, so beyond a quick glance at the source code I can't say for sure what's causing it. As a one time thing I'd write it off but I'm seeing it repeated every couple of minutes following my last reboot. Should I be concerned about this?

    Jenkins JIRA | 10 months ago | Nick Lykins
    java.util.concurrent.CancellationException
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    WCS behaves badly or fails altogether when CPU is burdened

    webcamstudio | 1 year ago | tetsujin
    java.util.concurrent.CancellationException

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Root Cause Analysis

  1. java.util.concurrent.CancellationException

    No message provided

    at java.util.concurrent.FutureTask.report()
  2. Java RT
    FutureTask.get
    1. java.util.concurrent.FutureTask.report(FutureTask.java:121)
    2. java.util.concurrent.FutureTask.get(FutureTask.java:188)
    2 frames
  3. futures
    NormalFuture.main
    1. futures.NormalFuture.main(NormalFuture.java:18)
    1 frame