f

docs/source/common/trainer.rst

@@ -515,7 +515,9 @@ callbacks
 
 |
 
-Add a list of :class:`~pytorch_lightning.callbacks.Callback`.
+Add a list of :class:`~pytorch_lightning.callbacks.Callback`. Callbacks run sequentially in the order defined here
+with the exception of :class:`~pytorch_lightning.callbacks.model_checkpoint.ModelCheckpoint` callbacks which run
+after all others to ensure all states are saved to the checkpoints.
 
 .. code-block:: python
 

pytorch_lightning/trainer/connectors/callback_connector.py

@@ -111,6 +111,7 @@ def attach_model_logging_functions(self, model):
             callback.log = model.log
             callback.log_dict = model.log_dict
 
+
 def _tail_checkpoint_callbacks(callbacks: List[Callback]) -> List[Callback]:
     """
     Moves all ModelCheckpoint callbacks to the end of the list. The sequential order within the group of