fix(spans): add more observability for SpanFlusher.main timeout#106825
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fix(spans): add more observability for SpanFlusher.main timeout#106825
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Scope: Backend
bmckerry
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Jan 22, 2026
evanh
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Jan 22, 2026
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Adds more logging to identify where SpanFlusher subprocess hangs during startup. The subprocess fails to become healthy within 120s intermittently, but we only see logs up to
configure()completing("Using configuration..."), not the actual main function starting.The hang is somewhere in between:
configure()completingadd_global_tags()main_fn()