Avoid call to wakeup from sender thread for maybe_connect

kafka/client_async.py

@@ -321,14 +321,15 @@ def _conn_state_change(self, node_id, conn):
                     log.warning("Node %s connection failed -- refreshing metadata", node_id)
                     self.cluster.request_update()
 
-    def maybe_connect(self, node_id):
+    def maybe_connect(self, node_id, wakeup=True):
         """Queues a node for asynchronous connection during the next .poll()"""
         if self._can_connect(node_id):
             self._connecting.add(node_id)
             # Wakeup signal is useful in case another thread is
             # blocked waiting for incoming network traffic while holding
             # the client lock in poll().
-            self.wakeup()
+            if wakeup:
+                self.wakeup()
             return True
         return False
 

kafka/producer/sender.py

@@ -105,8 +105,9 @@ def run_once(self):
         # remove any nodes we aren't ready to send to
         not_ready_timeout = float('inf')
         for node in list(ready_nodes):
-            if not self._client.ready(node):
+            if not self._client.is_ready(node):
                 log.debug('Node %s not ready; delaying produce of accumulated batch', node)
+                self._client.maybe_connect(node, wakeup=False)
                 ready_nodes.remove(node)
                 not_ready_timeout = min(not_ready_timeout,
                                         self._client.connection_delay(node))