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[Bugfix] Catch and log invalid token ids in detokenizer #2 (#26445)

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Signed-off-by: Nick Hill <nhill@redhat.com>
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Nick Hill 2025-10-08 21:20:25 -07:00 committed by GitHub
parent ebf6ef1a9b
commit bb6d8c21f9
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1 changed files with 2 additions and 2 deletions
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4
vllm/v1/engine/detokenizer.py
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@ -227,10 +227,10 @@ class FastIncrementalDetokenizer(BaseIncrementalDetokenizer):
def _protected_step(self, next_token_id: int) -> Optional[str]: def _protected_step(self, next_token_id: int) -> Optional[str]:
try: try:
token = self.stream.step(self.tokenizer, next_token_id) token = self.stream.step(self.tokenizer, next_token_id)
except OverflowError: except (OverflowError, TypeError):
# Handle rare observed overflow, still to be diagnosed. # Handle rare observed overflow, still to be diagnosed.
# See https://github.com/vllm-project/vllm/issues/21951. # See https://github.com/vllm-project/vllm/issues/21951.
logger.exception("Encountered invalid token id: %d", next_token_id) logger.exception("Encountered invalid token id: %r", next_token_id)
token = None token = None
except Exception as e: except Exception as e:
if not str(e).startswith(INVALID_PREFIX_ERR_MSG): if not str(e).startswith(INVALID_PREFIX_ERR_MSG):