NOTE Fixed in https://bugs.openjdk.java.net/browse/CODETOOLS-7901244

This is a sample project to demonstrate if the application in ForkedMain cannot completely shut down the running threads, then JMH is not able to finalize and complete the benchmark.

To run the sample, you need to have Java 8. Simply run:

$ ./run.sh

Then you can use jps and jstack -l on ForkedMain to observe that there are still running threads inside it and JMH is still waiting on them.

To start with, look at ApplicationBenchmark. Change how the application is shut down through the chain in #teardown() and it is observable that JMH completes the benchmark.