Follow python logging best practice in torchx/runner/events/... (#794) (

#794)

Summary:

Do not set the log level or filters of either root or module-level loggers. Instead, configure this on each handler.

Reviewed By: AndreasBackx

Differential Revision: D51381654

torchx/runner/events/__init__.py

@@ -49,8 +49,8 @@ def _get_or_create_logger(destination: str = "null") -> logging.Logger:
     if _events_logger:
         return _events_logger
     logging_handler = get_logging_handler(destination)
+    logging_handler.setLevel(logging.DEBUG)
     _events_logger = logging.getLogger(f"torchx-events-{destination}")
-    _events_logger.setLevel(logging.DEBUG)
     # Do not propagate message to the root logger
     _events_logger.propagate = False
     _events_logger.addHandler(logging_handler)