lint roll

tests/core/utils/test_root_tracker.py

@@ -114,7 +114,6 @@ def binary_parent(node):
     st.integers(min_value=0, max_value=6),
     min_size=3,
 ))
-#@settings(max_examples=20000)
 def test_prune_reinsert_root_tracking_binary_tree(element_flipping):
     tracker = RootTracker()
 

trinity/sync/common/headers.py

@@ -492,6 +492,17 @@ async def new_sync_headers(
         if False:
             yield
 
+    @abstractmethod
+    async def clear_buffer(self) -> None:
+        """
+        Whatever headers have been received until now, dump them all and restart.
+        This is a last resort, to be used only when a consumer seems to receive
+        headers out of other and decides they have no other option besides reset.
+
+        It wastes a lot of previously completed work.
+        """
+        pass
+
     @abstractmethod
     def get_target_header_hash(self) -> Hash32:
         pass