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better error message for /init timeout #236

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Merged
dphuang2 merged 1 commit into from
Sep 29, 2025
+13 −2
Merged

better error message for /init timeout #236

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15 changes: 13 additions & 2 deletions eval_protocol/pytest/remote_rollout_processor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -121,8 +121,19 @@ async def _process_row(row: EvaluationRow) -> EvaluationRow:
# Fire-and-poll
def _post_init() -> None:
url = f"{remote_base_url}/init"
r = requests.post(url, json=init_payload.model_dump(), timeout=30)
r.raise_for_status()
try:
r = requests.post(url, json=init_payload.model_dump(), timeout=30)
r.raise_for_status()
except requests.exceptions.Timeout:
raise TimeoutError(
"The /init endpoint timed out after 30 seconds. "
"CRITICAL: The /init endpoint must return immediately (within 30s) and NOT block on rollout execution. "
"Your remote server should:\n"
"1. Accept the /init request and return a 200 response immediately\n"
"2. Process the actual rollout asynchronously in the background\n"
"3. Use the /status endpoint to report progress\n"
"For Python/Node.js: Start a separate process per rollout to avoid blocking the /init response."
)

await asyncio.to_thread(_post_init)

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