[issue11271] concurrent.futures.ProcessPoolExecutor.map() doesn't batch function arguments by chunks

[Dan O'Reilly]

Dan O'Reilly added the comment:

I've added new versions of the patch/demonstration that ensures we actually submit all the futures before trying to yield from the returned iterator. Previously we were just returning a generator object when map was called, without actually submitting any futures.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue11271>
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