[Serve.llm] Add test to guard against upstream StatLogger changes #53351
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Why are these changes needed?
RayPrometheusStatLogger inherits from StatLoggerBase in vLLM. We need to make sure this code path is exercised to ensure our implementation stays compliant with vLLM's abstract base class.
This is needed until vLLM 0.9.0, when we will switch to the implementation which landed in vllm-project/vllm#17925.
Related issue number
Guard against issue #53335, close LLM-1969
Checks
git commit -s
) in this PR.scripts/format.sh
to lint the changes in this PR.method in Tune, I've added it in
doc/source/tune/api/
under thecorresponding
.rst
file.