Attempt to cancel future if applicable, deal with multiple _sync_state calls

Author: yorickvP

pinecone/grpc/future.py

@@ -30,8 +30,9 @@ def _sync_state(self, grpc_future):
         if self.done():
             return
 
-        if grpc_future.running():
-            self.set_running_or_notify_cancel()
+        if grpc_future.running() and not self.running():
+            if not self.set_running_or_notify_cancel():
+                grpc_future.cancel()
         elif grpc_future.cancelled():
             self.cancel()
         elif grpc_future.done():