Align Async Counter behavior when used with filtered attributes. #3439
Labels
area:metrics
Part of OpenTelemetry Metrics
bug
Something isn't working
pkg:SDK
Related to an SDK package
Milestone
Problem Statement
If an attribute filter is used with an Async Counter the last value observed will be exported. This
Yields a Sum with a value of 5.
This has been discussed in the spec, and the expected output is a Sum with a value of 9.
open-telemetry/opentelemetry-specification#2905
Proposed Solution
Correct our instruments, filters, or aggregators to get the appropriate value.
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