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Agent: fix worker premature exit in parallel_extract.py with sentinel-based shutdown #723

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Merged
luotao1 merged 1 commit into from
May 21, 2026
Merged

Agent: fix worker premature exit in parallel_extract.py with sentinel-based shutdown #723

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8 changes: 5 additions & 3 deletions graph_net/agent/parallel_extract.py
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Original file line number Diff line number Diff line change
Expand Up @@ -226,9 +226,8 @@ def _orphan_watcher():
return

while True:
try:
model_id = task_queue.get_nowait()
except queue.Empty:
model_id = task_queue.get()
if model_id is None:
break

print(f"{prefix} Extracting: {model_id}", flush=True)
Expand Down Expand Up @@ -523,6 +522,9 @@ def main() -> int:
task_queue: multiprocessing.Queue = multiprocessing.Queue()
for mid in model_ids:
task_queue.put(mid)
# Sentinel: each worker gets one None to signal shutdown
for _ in range(num_workers):
task_queue.put(None)

# --- Launch workers ---
result_queue: multiprocessing.Queue = multiprocessing.Queue()
Expand Down
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