Threading issues causing apparent deadlock [SPR-11418]

[spring-projects-issues]

chip stettler opened SPR-11418 and commented

I have two beans that implement @Async methods. I have an async method in bean #1 calling an async method in bean #2. I create A ThreadPoolExecutor with 5 core threads, 10 max threads and 25 queue length.

I created a test that creates 5 parallel calls to bean#1 async method. The threads appear to deadlock and a timeout occurs on the Future.get(). If I increase the core threads to 6 the test executes with no problem.

If I remove an @Async from either bean so that there is no nesting of async calls then everything works fine.

Seems like a bug as it sort of works if there are enough threads but the queuing aspect of the thread pool seems to break when nested.

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Affects: 3.2.4

Attachments:

• thread-test.zip (16.20 kB)

[spring-projects-issues]

Bulk closing outdated, unresolved issues. Please, reopen if still relevant.