FA-10257 / Observability / Member archive

Metric series identity: Different instruments collide by omitting the metric name · case 02

Different instruments collide by omitting the metric name.

Member previewVariant 2 · 3 implementations · 6 checks per implementation

Case contract

A series identity includes metric name, sorted label key-value pairs excluding configured dropped keys, measurement unit, and instrument kind. Dropping values never drops other equal-valued labels.

Why this case matters

An offline model of metric series identity, suitable for testing build and release tooling without external services.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
fixture 1	`[null, [["a", "2"], ["z", "1"]], "count", "counter"]`	`["requests", [["a", "2"], ["z", "1"]], "count", "counter"]`	Failed

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