[CI] Enable python-no-log-warn precommit rule (ray-project#51099)

`logging.warn` is legacy and deprecated

Signed-off-by: Chi-Sheng Liu <[email protected]>

Author: MortalHappiness

ci/lint/lint.sh

@@ -16,6 +16,7 @@ pre_commit() {
   pip install -c python/requirements_compiled.txt pre-commit clang-format
 
   HOOKS=(
+    python-no-log-warn
     ruff
     check-added-large-files
     check-ast

python/ray/_private/memory_monitor.py

@@ -125,7 +125,7 @@ def __init__(self, error_threshold=0.95, check_interval=1):
         except IOError:
             self.cgroup_memory_limit_gb = sys.maxsize / (1024**3)
         if not psutil:
-            logger.warn(
+            logger.warning(
                 "WARNING: Not monitoring node memory since `psutil` "
                 "is not installed. Install this with "
                 "`pip install psutil` to enable "

python/ray/data/_internal/datasource/image_datasource.py

@@ -115,7 +115,7 @@ def _estimate_files_encoding_ratio(self) -> float:
         )
         num_files = len(non_empty_path_and_size)
         if num_files == 0:
-            logger.warn(
+            logger.warning(
                 "All input image files are empty. "
                 "Use on-disk file size to estimate images in-memory size."
             )
@@ -133,7 +133,7 @@ def _estimate_files_encoding_ratio(self) -> float:
             elif self.mode in ["RGBA", "CMYK", "I", "F"]:
                 dimension = 4
             else:
-                logger.warn(f"Found unknown image mode: {self.mode}.")
+                logger.warning(f"Found unknown image mode: {self.mode}.")
                 return IMAGE_ENCODING_RATIO_ESTIMATE_DEFAULT
             height, width = self.size
             single_image_size = height * width * dimension
@@ -146,7 +146,7 @@ def _estimate_files_encoding_ratio(self) -> float:
 
         sampling_duration = time.perf_counter() - start_time
         if sampling_duration > 5:
-            logger.warn(
+            logger.warning(
                 "Image input size estimation took "
                 f"{round(sampling_duration, 2)} seconds."
             )