Antoine Pitrou added the comment:
Quick patch below. I'll make a PR once I have time to :-)
diff --git a/Lib/multiprocessing/pool.py b/Lib/multiprocessing/pool.py
index ffdf426..945afa2 100644
--- a/Lib/multiprocessing/pool.py
+++ b/Lib/multiprocessing/pool.py
@@ -128,6 +128,8 @@ def worker(inqueue, outqueue, initializer=None,
initargs=(), maxtasks=None,
util.debug("Possible encoding error while sending result: %s" % (
wrapped))
put((job, i, (False, wrapped)))
+
+ task = job = result = func = args = kwds = None
completed += 1
util.debug('worker exiting after %d tasks' % completed)
@@ -402,6 +404,8 @@ class Pool(object):
if set_length:
util.debug('doing set_length()')
set_length(i+1)
+ finally:
+ task = taskseq = job = None
else:
util.debug('task handler got sentinel')
@@ -445,6 +449,7 @@ class Pool(object):
cache[job]._set(i, obj)
except KeyError:
pass
+ task = job = obj = None
while cache and thread._state != TERMINATE:
try:
@@ -461,6 +466,7 @@ class Pool(object):
cache[job]._set(i, obj)
except KeyError:
pass
+ task = job = obj = None
if hasattr(outqueue, '_reader'):
util.debug('ensuring that outqueue is not full')
----------
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue29861>
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