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Created on 2012-02-03 21:29 by Ben.Timby, last changed 2022-04-11 14:57 by admin. This issue is now closed.
| Messages (2) | |||
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| msg152566 - (view) | Author: Ben Timby (Ben.Timby) | Date: 2012-02-03 21:29 | |
If you instantiate a ThreadPool, then call map() with an empty list, the join() method will block indefinitely on self._result_handler.join() $ python > from multiprocessing.pool import ThreadPool > t = ThreadPool(1) > t.map_async(lambda x: x, []) > t.close() > t.join() # <- never returns I was not able to determine the root cause, however, I found that the join() blocks when joining the _result_handler thread. |
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| msg152606 - (view) | Author: Charles-François Natali (neologix) *  |
Date: 2012-02-04 10:33 | |
It's a duplicate of issue #12157. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:57:26 | admin | set | github: 58145 |
| 2012-02-04 10:33:59 | neologix | set | status: open -> closed superseder: join method of multiprocessing Pool object hangs if iterable argument of pool.map is empty versions: + Python 3.2, Python 3.3 nosy: + neologix messages: + msg152606 resolution: duplicate stage: resolved |
| 2012-02-04 06:17:51 | rosslagerwall | set | nosy:
+ rosslagerwall |
| 2012-02-03 21:29:22 | Ben.Timby | create | |