Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18695#discussion_r130515139
--- Diff: python/pyspark/broadcast.py ---
@@ -139,6 +140,24 @@ def __reduce__(self):
return _from_id, (self._jbroadcast.id(),)
+class BroadcastPickleRegistry(threading.local):
--- End diff --
I'm ok for both ways. :)
My only concern is in previous locking way is we lock it for dumping the
command. I'm not sure if the dumping can take long time for big command so we
prevent other threads to preparing their commands.
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