Paul Giannaros created ZOOKEEPER-1470:
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Summary: zkpython: close() should delete any watcher
Key: ZOOKEEPER-1470
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1470
Project: ZooKeeper
Issue Type: Bug
Components: contrib-bindings
Affects Versions: 3.4.3
Reporter: Paul Giannaros
Priority: Minor
When calling zookeeper.close(handle), any connection watcher for the handle is
not deleted. This is a source of memory leaks for applications that create and
close lots of connections. Its damage can be mitigated to some degree by
changing the watcher to some function that won't keep references to instances
alive before calling close.
The fix is just to add a free_pywatcher(..) call in the close sequence.
Alternatively you could allow set_watcher(handle, None) as a way of deleting
the watcher, but it's probably best to take care of it on close too.
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