Clarify asynchronous instrument callback documentation and order-of-execution requirements #2361
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arminru
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While resolving with the updates in #2317, it felt important to add one related sentence. The order of callback execution is not specified. I want to add this sentence because even though we already state that users SHOULD NOT observe duplicate asynchronous measurements, I want it to be clear that there is no meaningful concept of "first value observed" or "last value observed". |
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…xecution requirements (open-telemetry#2361) * Make callback requirements apply to user documentation * PR num * Update specification/metrics/api.md * edit: functions * clarify * not * lint
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Part of #2350
Changes
As noted in #2350 (and a comment in #2317 by @anuraaga), the requirements for callbacks to behave a certain way apply to the user, not the implementation or the API designer. Therefore, specify these as documentation requirements.