"Unable to get the context class loader for the current thread" in ExecutorService task

[Nikita Salnikov-Tarnovski]

Hi.

I am trying to use Togglz 2.4.1.Final in Spring Boot application, but I have encountered the following error.

I submit a runnable to `java.util.concurrent.ExecutorService.submit` method. During runtime this runnable causes the following exception:

Caused by: java.lang.IllegalStateException: Unable to get the context class loader for the current thread!

       at org.togglz.core.context.FeatureContext.getContextClassLoader(FeatureContext.java:135)

       at org.togglz.core.context.FeatureContext.getFeatureManagerOrNull(FeatureContext.java:69)

       at org.togglz.core.context.FeatureContext.getFeatureManager(FeatureContext.java:47)

       at eu.plumbr.portal.integration.togglz.PlumbrFeatures.isActive(PlumbrFeatures.java:10)
....skipped...

       at java.util.concurrent.FutureTask.run(FutureTask.java:266)

       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

where PlumbrFeature is as follows:

public enum PlumbrFeatures implements Feature {
  HZ_LOOKUP;

  public boolean isActive() {
    return FeatureContext.getFeatureManager().isActive(this);
  }

}

What am I doing wrong?

[Nikita Salnikov-Tarnovski]

Mnjah. It seems I have found the problem myself. This executor services uses a custom thread factory which manually sets context classloader to null for some reason...

[Christian Kaltepoth]

Nice to hear you fixed your problem. Yes, a custom thread pool without a context classloader could cause these issues.

--

Christian Kaltepoth

Blog: http://blog.kaltepoth.de/

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GitHub: https://github.com/chkal