[issue20319] concurrent.futures.wait() can block forever even if Futures have completed

[Sebastian Kreft]

Sebastian Kreft added the comment:

The Executor is still working (but I'm using a ThreadPoolExcutor). I can dynamically change the number of max tasks allowed, which successfully fires the new tasks.

After 2 days running, five tasks are in this weird state.

I will change the code as suggested and post my results.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20319>
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