load metadata and schema after creating all buffer files

sed/loader/flash/loader.py

@@ -656,22 +656,20 @@ def buffer_file_handler(self, data_parquet_dir: Path, detector: str, force_recre
         if len(h5_filenames) == 0:
             raise ValueError("No data available. Probably failed reading all h5 files")
 
-        # read parquet metadata and schema
-        metadatas = [pq.read_metadata(file) for file in existing_parquet_filenames]
-        schemas = [pq.read_schema(file) for file in existing_parquet_filenames]
-
-        # check if available_channels are same as schema
-        available_channels_set = set(self.available_channels)
-
-        for i, schema in enumerate(schemas):
-            schema_set = set(schema.names)
-            # Check if available_channels are the same as schema including pulseId
-            if not force_recreate and schema_set != available_channels_set.union({"pulseId"}):
-                raise ValueError(
-                    "The available channels do not match the schema of file "
-                    f"{existing_parquet_filenames[i]}"
-                    "Please check the configuration file or set force_recreate to True.",
-                )
+        if not force_recreate:
+            # Check if the available channels match the schema of the existing parquet files
+            schemas = [pq.read_schema(file) for file in existing_parquet_filenames]
+            available_channels_set = set(self.available_channels)
+
+            for i, schema in enumerate(schemas):
+                schema_set = set(schema.names)
+                # Check if available_channels are the same as schema including pulseId
+                if schema_set != available_channels_set.union({"pulseId"}):
+                    raise ValueError(
+                        "The available channels do not match the schema of file "
+                        f"{existing_parquet_filenames[i]}"
+                        "Please check the configuration file or set force_recreate to True.",
+                    )
 
         # Choose files to read
         files_to_read = [
@@ -703,7 +701,11 @@ def buffer_file_handler(self, data_parquet_dir: Path, detector: str, force_recre
 
         print("All files converted successfully!")
 
-        return parquet_filenames, metadatas, schemas
+        # read all parquet metadata and schema
+        metadata = [pq.read_metadata(file) for file in parquet_filenames]
+        schema = [pq.read_schema(file) for file in parquet_filenames]
+
+        return parquet_filenames, metadata, schema
 
     def parquet_handler(
         self,