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Disable by default gauge-based histograms in the Micrometer bridge #8360

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mateuszrzeszutek
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Resolves #8357

I think this is something we'll want to do in the same release as #8334

@mateuszrzeszutek mateuszrzeszutek requested a review from a team as a code owner April 25, 2023 14:01
@mateuszrzeszutek mateuszrzeszutek added this to the v1.26.0 milestone May 5, 2023
| `otel.instrumentation.micrometer.prometheus-mode.enabled` | boolean | false | Enable the "Prometheus mode" this will simulate the behavior of Micrometer's PrometheusMeterRegistry. The instruments will be renamed to match Micrometer instrument naming, and the base time unit will be set to seconds. |
| System property | Type | Default | Description |
|------------------------------------------------------------|---------|---------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `otel.instrumentation.micrometer.base-time-unit` | String | `ms` | Set the base time unit for the OpenTelemetry `MeterRegistry` implementation. <details><summary>Valid values</summary>`ns`, `nanoseconds`, `us`, `microseconds`, `ms`, `microseconds`, `s`, `seconds`, `min`, `minutes`, `h`, `hours`, `d`, `days`</details> |
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does it make sense to change the default to s (in the same release as #8435)?

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Yes, definitely! I've been waiting for the other two micrometer PRs to get merged first though, because of a large number of conflicts (especially in test code)

@mateuszrzeszutek mateuszrzeszutek removed this from the v1.26.0 milestone May 9, 2023
@mateuszrzeszutek mateuszrzeszutek force-pushed the disable-histogram-gauges-by-default branch from 2e02a1e to 75b670a Compare May 15, 2023 07:38
@mateuszrzeszutek mateuszrzeszutek enabled auto-merge (squash) May 15, 2023 09:40
@mateuszrzeszutek mateuszrzeszutek merged commit 3dd8ad7 into open-telemetry:main May 15, 2023
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@mateuszrzeszutek mateuszrzeszutek deleted the disable-histogram-gauges-by-default branch May 15, 2023 10:05
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Disable by default gauge-based histograms in the Micrometer bridge
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