opentelemetry-go

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Right now the Accumulator has a global map (InstrumentDescriptor + LabelSet) -> Record. This has an advantage of simpler code, but with this approach there is a chance of high contention on the global map.

The proposal is to split Accumulator into 2 parts:

Accumulator: global map InstrumentDescriptor -> InstrumentAccumulator InstrumentAccumulator: local to the instrument map between LabelSet -> Record

This way we can reduce contention on the global map when non-bound records are recorded.

This will be important before we can vary the collection interval on a per-instrument basis. OTOH doesn't feel urgent to me.

Marking as after GA. Please update if this is incorrect.

Stale, closing.