Merge pull request #244 remove cancel_futures from call stop_executor

Author: rekby

ydb/topic.py

@@ -208,7 +208,7 @@ def close(self):
             return
 
         self._closed = True
-        self._executor.shutdown(wait=False, cancel_futures=True)
+        self._executor.shutdown(wait=False)
 
     def _check_closed(self):
         if not self._closed:
@@ -366,7 +366,7 @@ def close(self):
             return
 
         self._closed = True
-        self._executor.shutdown(wait=False, cancel_futures=True)
+        self._executor.shutdown(wait=False)
 
     def _check_closed(self):
         if not self._closed: