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[Bug] [V1] Try fetching stop_reason from EngineOutput before checking the request #13108

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merged 2 commits into from
Feb 12, 2025
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[Bug] [V1] Try fetching stop_reason from EngineOutput before checking the request #13108

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b80a1b6
Try fetching stop_reason from EngineOutput before checking the request
bnellnm Feb 11, 2025
89bad07
review comment, fix type annotation
bnellnm Feb 11, 2025
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7 changes: 5 additions & 2 deletions vllm/v1/engine/output_processor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -179,11 +179,14 @@ def process_outputs(
# in the EngineCore.
req_state.is_prefilling = not new_token_ids

stop_reason = engine_core_output.stop_reason

# 2) Detokenize the token ids into text and check for stop
# strings.
stop_reason = req_state.detokenizer.update(new_token_ids)
if stop_reason:
stop_string = req_state.detokenizer.update(new_token_ids)
if stop_string and finish_reason != FinishReason.STOP:
finish_reason = FinishReason.STOP
stop_reason = stop_string

# 3) Compute sample and prompt logprobs for request,
# if required.
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