fix(mlflow): check mlflow version to use the synchronous flag (#29195)

* fix(mlflow): check mlflow version to use the  flag

* fix indent

* add log_params async and fix quality

src/transformers/integrations/integration_utils.py

@@ -29,6 +29,7 @@ from pathlib import Path
 from typing import TYPE_CHECKING, Any, Dict, Literal, Optional, Union
 
 import numpy as np
+import packaging.version
 
 from .. import __version__ as version
 from ..utils import flatten_dict, is_datasets_available, is_pandas_available, is_torch_available, logging
@@ -985,6 +986,12 @@ class MLflowCallback(TrainerCallback):
         self._experiment_name = os.getenv("MLFLOW_EXPERIMENT_NAME", None)
         self._flatten_params = os.getenv("MLFLOW_FLATTEN_PARAMS", "FALSE").upper() in ENV_VARS_TRUE_VALUES
         self._run_id = os.getenv("MLFLOW_RUN_ID", None)
+        self._async_log = False
+        # "synchronous" flag is only available with mlflow version >= 2.8.0
+        # https://github.com/mlflow/mlflow/pull/9705
+        # https://github.com/mlflow/mlflow/releases/tag/v2.8.0
+        if packaging.version.parse(importlib.metadata.version("mlflow")) >= packaging.version.parse("2.8.0"):
+            self._async_log = True
         logger.debug(
             f"MLflow experiment_name={self._experiment_name}, run_name={args.run_name}, nested={self._nested_run},"
             f" tags={self._nested_run}, tracking_uri={self._tracking_uri}"
@@ -1023,6 +1030,11 @@ class MLflowCallback(TrainerCallback):
             # MLflow cannot log more than 100 values in one go, so we have to split it
             combined_dict_items = list(combined_dict.items())
             for i in range(0, len(combined_dict_items), self._MAX_PARAMS_TAGS_PER_BATCH):
+                if self._async_log:
+                    self._ml_flow.log_params(
+                        dict(combined_dict_items[i : i + self._MAX_PARAMS_TAGS_PER_BATCH]), synchronous=False
+                    )
+                else:
                     self._ml_flow.log_params(dict(combined_dict_items[i : i + self._MAX_PARAMS_TAGS_PER_BATCH]))
             mlflow_tags = os.getenv("MLFLOW_TAGS", None)
             if mlflow_tags:
@@ -1047,7 +1059,11 @@ class MLflowCallback(TrainerCallback):
                         f'Trainer is attempting to log a value of "{v}" of type {type(v)} for key "{k}" as a metric. '
                         "MLflow's log_metric() only accepts float and int types so we dropped this attribute."
                     )
+
+            if self._async_log:
                 self._ml_flow.log_metrics(metrics=metrics, step=state.global_step, synchronous=False)
+            else:
+                self._ml_flow.log_metrics(metrics=metrics, step=state.global_step)
 
     def on_train_end(self, args, state, control, **kwargs):
         if self._initialized and state.is_world_process_zero: