[Bug]NPE in jdk-threadpool-plugin

[ForrestWang123]

Search before asking

• I had searched in the issues and found no similar issues.

Apache SkyWalking Component

Java Agent (apache/skywalking-java)

What happened

NPE in jdk-threadpool-plugin

java.lang.NullPointerException
at org.apache.skywalking.apm.agent.core.context.ContextManager.activeSpan(ContextManager.java:184)
at org.apache.skywalking.apm.plugin.AbstractThreadingPoolInterceptor.handleMethodException(AbstractThreadingPoolInterceptor.java:66)
at org.apache.skywalking.apm.plugin.ThreadPoolExecuteMethodInterceptor_internal.intercept(InstanceMethodInterWithOverrideArgsTemplate.java:92)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)

What you expected to happen

Should not have NPE

How to reproduce

1. beforeMethod of AbstractThreadingPoolInterceptor didn't create any span.
2. exception occur in execution body of the Runnable/Callable

Anything else

No response

Are you willing to submit a pull request to fix on your own?

• Yes I am willing to submit a pull request on my own!

Code of Conduct

• I agree to follow this project's Code of Conduct

[wu-sheng]

Follow up through apache/skywalking-java#681