[Core] Pass logs through if sphinx-doctest is running

doc/Makefile

@@ -58,12 +58,12 @@ clean:
 	rm -rf ./source/rllib/package_ref/doc*
 
 html:
-	SKIP_LOG_RESET=True $(SPHINXBUILD) -W --keep-going -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
+	$(SPHINXBUILD) -W --keep-going -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
 	@echo
 	@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
 
 develop:
-	SKIP_LOG_RESET=True FAST=True $(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
+	FAST=True $(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
 	@echo
 	@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
 	@echo "View the documentation by opening a browser and going to $(BUILDDIR)/html/index.html."

doc/source/conf.py

@@ -62,6 +62,7 @@
     "sphinx_tabs.tabs",
     "sphinx_remove_toctrees",
     "sphinx_design",
+    "sphinx.ext.intersphinx",
 ]
 
 # Prune deep toc-trees on demand for smaller html and faster builds.
@@ -107,6 +108,9 @@
     "replacements",
 ]
 
+intersphinx_mapping = {
+    "sklearn": ("https://scikit-learn.org/stable/", None),
+}
 
 # Cache notebook outputs in _build/.jupyter_cache
 # To prevent notebook execution, set this to "off". To force re-execution, set this to "force".

python/ray/__init__.py

@@ -4,11 +4,7 @@
 import os
 import sys
 
-# For cases like docs builds, we want the default logging config.
-skip_reset = os.environ.get("SKIP_LOG_RESET", False)
-if not skip_reset:
-    log.generate_logging_config()
-
+log.generate_logging_config()
 logger = logging.getLogger(__name__)
 
 

python/ray/_private/log.py

@@ -2,6 +2,30 @@
 import re
 from logging.config import dictConfig
 import threading
+from typing import Union
+
+
+def _print_loggers():
+    """Print a formatted list of loggers and their handlers for debugging."""
+    loggers = {logging.root.name: logging.root}
+    loggers.update(dict(sorted(logging.root.manager.loggerDict.items())))
+    for name, logger in loggers.items():
+        if isinstance(logger, logging.Logger):
+            print(f"  {name}: disabled={logger.disabled}, propagate={logger.propagate}")
+            for handler in logger.handlers:
+                print(f"    {handler}")
+
+
+def clear_logger(logger: Union[str, logging.Logger]):
+    """Reset a logger, clearing its handlers and enabling propagation.
+
+    Args:
+        logger: Logger to be cleared
+    """
+    if isinstance(logger, str):
+        logger = logging.getLogger(logger)
+    logger.propagate = True
+    logger.handlers.clear()
 
 
 class ContextFilter(logging.Filter):
@@ -134,5 +158,6 @@ def generate_logging_config():
                 "filters": filters,
                 "handlers": handlers,
                 "loggers": loggers,
+                "disable_existing_loggers": False,
             }
         )

python/ray/_private/ray_logging.py

@@ -68,9 +68,7 @@ def setup_component_logger(
     Returns:
         the created or modified logger.
     """
-    ray_logger = logging.getLogger("ray")
-    ray_logger.propagate = True
-    ray_logger.handlers.clear()
+    ray._private.log.clear_logger("ray")
 
     logger = logging.getLogger(logger_name)
     if type(logging_level) is str:

python/ray/tests/test_logging.py

@@ -942,6 +942,15 @@ def test_log_level_settings(
         assert len(caplog.records) == 0, "Log message found where none are expected."
 
 
+def test_log_with_import():
+
+    logger = logging.getLogger(__name__)
+    assert not logger.disabled
+    ray.log.logger_initialized = False
+    ray.log.generate_logging_config()
+    assert not logger.disabled
+
+
 if __name__ == "__main__":
     import sys