feat: add support for data_files in pretraining (#2238)

src/axolotl/utils/config/models/input/v0_4_1/__init__.py

@@ -128,6 +128,7 @@ class PretrainingDataset(BaseModel):
     text_column: Optional[str] = "text"
     type: Optional[str] = "pretrain"
     trust_remote_code: Optional[bool] = False
+    data_files: Optional[str] = None
 
 
 class UserDefinedPrompterType(BaseModel):

src/axolotl/utils/data/sft.py

@@ -88,6 +88,7 @@ def prepare_dataset(cfg, tokenizer, processor=None):
         path = cfg.pretraining_dataset
         split = "train"
         name = None
+        data_files = None
         if isinstance(cfg.pretraining_dataset, list) and isinstance(
             cfg.pretraining_dataset[0], dict
         ):
@@ -96,6 +97,8 @@ def prepare_dataset(cfg, tokenizer, processor=None):
             if "split" in cfg.pretraining_dataset[0]:
                 split = cfg.pretraining_dataset[0]["split"]
 
+            data_files = cfg.pretraining_dataset[0].get("data_files")
+
         ds_wrapper_partial = functools.partial(
             get_dataset_wrapper,
             cfg.pretraining_dataset[0],
@@ -105,7 +108,9 @@ def prepare_dataset(cfg, tokenizer, processor=None):
         )
 
         train_dataset = wrap_pretraining_dataset(
-            load_dataset(path, streaming=True, split=split, name=name),
+            load_dataset(
+                path, streaming=True, split=split, name=name, data_files=data_files
+            ),
             tokenizer,
             cfg,
             ds_wrapper_partial,