[Feature]: Exponential histograms in opentelemetry-prometheus

[gheorghitamutu]

Related Problems?

Hello,
Is there any plan for the crate opentelemetry-prometheus to support native histograms? I'm currently using https://crates.io/crates/prometheus-client but I'd like to have a single prometheus crate (the one from here).

My understanding is that the exporter is built on top of tikv/rust-prometheus which doesn't support such things at the moment.

Thank you!

Describe the solution you'd like:

I'd like the prometheus exporter crate to support exponential histograms.

Considered Alternatives

https://crates.io/crates/prometheus-client

Additional Context

No response

Tip

_{React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it. Learn more here.}

[cijothomas]

@ArthurSens this is supported in spec right? Do you have bandwidth to help fix this in the prometheus exporter?