Wait threads to finish in pithos append_object

kamaki/clients/pithos/__init__.py

@@ -1272,7 +1272,6 @@ class PithosClient(PithosRestClient):
 
         :param upload_db: progress.bar for uploading
         """
-
         self._assert_container()
         meta = self.get_container_info()
         blocksize = int(meta['x-container-block-size'])
@@ -1317,6 +1316,9 @@ class PithosClient(PithosRestClient):
             sendlog.info('- - - wait for threads to finish')
             for thread in activethreads():
                 thread.join()
+        finally:
+            from time import sleep
+            sleep(1.1 * len(activethreads()))
         return headers.values()
 
     def truncate_object(self, obj, upto_bytes):