Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/10579#discussion_r48990874
--- Diff: python/pyspark/context.py ---
@@ -54,6 +54,64 @@
}
+class Py4jCallbackConnectionCleaner(object):
+
+ """
+ A cleaner to clean up callback connections that are not closed by
Py4j. See SPARK-12617.
+ It will scan all callback connections every 30 seconds and close the
dead connections.
+ """
+
+ def __init__(self, gateway):
+ self._gateway = gateway
+ self._stopped = False
+ self._timer = None
+ self._lock = RLock()
+
+ def start(self):
+ if self._stopped:
+ return
+
+ def clean_closed_connections():
+ from py4j.java_gateway import quiet_close, quiet_shutdown
+
+ callback_server = self._gateway._callback_server
+ with callback_server.lock:
--- End diff --
Sorry that I didn't notice that only Streaming uses the callback server. I
sent #10621 to fix it.
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