Antoine Pitrou <pit...@free.fr> added the comment:

@Prof Plum

> When I call pool.apply_async() I expect it only to return when the worker 
> process has been started and finished it's initialization process

Well... it's called *async* for a reason, so I'm not sure why the behaviour 
would be partially synchronous.

@Oren

> Should we fix this?

I'm not sure how.  In mp.Pool we don't want to keep references to input objects 
longer than necessary.

> Or is it the responsibility of the user to not destroy shared objects too 
> soon?  (In that case, maybe we should mention it in the docs?)

Yes to both questions, IMO.

(note: changing title to better reflect issue)

----------
title: multiprocessing.Manager() race condition -> delicate behaviour of shared 
(managed) multiprocessing Queues

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue31092>
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