Merge pull request #292 from sylwiaszunejko/debug_driver_hanging

Add setting `connected_event` flag in libevreactor

Author: Lorak-mmk

cassandra/io/libevreactor.py

@@ -294,6 +294,7 @@ def close(self):
         if not self.is_defunct:
             self.error_all_requests(
                 ConnectionShutdown("Connection to %s was closed" % self.endpoint))
+            self.connected_event.set()
 
     def handle_write(self, watcher, revents, errno=None):
         if revents & libev.EV_ERROR: