jedcunningham commented on code in PR #60864:
URL: https://github.com/apache/airflow/pull/60864#discussion_r2722593636
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airflow-core/src/airflow/dag_processing/manager.py:
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@@ -989,8 +990,28 @@ def _add_new_files_to_queue(self, known_files: dict[str,
set[DagFileInfo]]):
def _resort_file_queue(self):
if self._file_parsing_sort_mode == "modified_time" and
self._file_queue:
- files, _ = self._sort_by_mtime(self._file_queue)
- self._file_queue = deque(files)
+ files_with_mtime: dict[DagFileInfo, float] = {}
+ mtime_changed = False
+
+ for file in list(self._file_queue):
+ try:
+ mtime = os.path.getmtime(file.absolute_path)
+ files_with_mtime[file] = mtime
+ stat = self._file_stats[file] # Creates entry via
defaultdict if missing
+ if stat.last_mtime != mtime:
+ mtime_changed = True
+ stat.last_mtime = mtime
+ except FileNotFoundError:
+ self.log.warning("Skipping processing of missing file:
%s", file)
+ self._file_stats.pop(file, None)
+ mtime_changed = True # Queue structure changed
+
+ if not mtime_changed:
+ return # No changes, skip sorting
+
+ # Sort by mtime descending and rebuild queue
+ sorted_files = [f for f, _ in sorted(files_with_mtime.items(),
key=itemgetter(1), reverse=True)]
Review Comment:
Wouldn't this put new files at the end of the list?
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