Deadlock in ThreadPoolExecutor

Question

Encountered a situation when ThreadPoolExecutor is parked in execute(Runnable) function while all the ThreadPool threads are waiting i

Answer 1

Definitely strange.

But before writing your own TPE try:

• another BlockingQueue impl., e.g. LinkedBlockingQueue

• specify fairness=true in ArrayBlockingQueue, i.e. use new ArrayBlockingQueue(n, true)

From those two opts I would chose second one 'cause it's very strange that offer() being blocked; one reason that comes into mind - thread scheduling policy on your Linux. Just as an assumption.