Special case ingest to use "replace" for record insertion in some sit…

…uations

Until we have a coherent way of handling record clashes, for ingest
assume that if UUIDv5 IDs are being used and the file is not
going to be transferred into the datastore, then replacing
existing records is allowable.

python/lsst/daf/butler/datastores/fileDatastore.py

@@ -1034,6 +1034,7 @@ def _finishIngest(
         record_validation_info: bool = True,
     ) -> None:
         # Docstring inherited from Datastore._finishIngest.
+        uses_uuid_v5 = True
         refsAndInfos = []
         progress = Progress("lsst.daf.butler.datastores.FileDatastore.ingest", level=logging.DEBUG)
         for dataset in progress.wrap(prepData.datasets, desc="Ingesting dataset files"):
@@ -1046,8 +1047,16 @@ def _finishIngest(
                 record_validation_info=record_validation_info,
             )
             refsAndInfos.extend([(ref, info) for ref in dataset.refs])
-
-        self._register_datasets(refsAndInfos, insert_mode="insert")
+            for ref in dataset.refs:
+                if ref.id.version != 5:
+                    uses_uuid_v5 = False
+
+        insert_mode = "insert"
+        if uses_uuid_v5 and transfer == "direct":
+            # Datasets are immutable, external and use well-defined UUID.
+            # Re-ingest is allowed (use most recent information).
+            insert_mode = "replace"
+        self._register_datasets(refsAndInfos, insert_mode=insert_mode)
 
     def _calculate_ingested_datastore_name(
         self,