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Ran 11 Sep 2025 10:59AM UTC

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Committed 11 Sep 2025 10:55AM UTC coverage: 80.368%. Remained the same

Job # 17642309023.1

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push

github

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web-flow

Commit Message

CP-308811: Add an option to limit the span depth in tracing (#6607)

Adds a new span.depth key to the trace context baggage, and a
configurable max_span_depth. This defaults to 100 and so will not limit
traces (the traces I've seen with the most depth are ~40 depth e.g.
https://jaeger.kfd.eng.citrite.net/trace/ea5ddca5509b3ae1102bc7279092652d),
but is useful when wanting to analyse large traces which can often
become slow if all the spans are recorded in a trace.

This isn't perfect, the span.depth seems to get lost sometimes between
xapi and xenops, resulting in a greater depth than that listed, but I
have created ticket CP-308999 for this and this works well enough to
greatly reduce the number of spans in a trace when needed, which is the
intention. As an example, a host evacuate trace with max_span_depth 10
goes down to ~1000 spans rather than the 34k+ withou a depth limit.

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