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WIP: Metrics: Re-enable metrics removed in prometheus/client_golang 1.12.2 #2822

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aknuds1
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@aknuds1 aknuds1 commented Aug 24, 2022

What this PR does

~80 runtime metrics were removed in prometheus/client_golang 1.12.2. This PR re-adds them, as suggested by @dannykopping and discussed in Slack.

NB: It's still being discussed whether these metrics should be re-enabled or not.

Which issue(s) this PR fixes or relates to

Checklist

  • [na] Tests updated
  • [na] Documentation added
  • CHANGELOG.md updated - the order of entries should be [CHANGE], [FEATURE], [ENHANCEMENT], [BUGFIX]

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>
@aknuds1 aknuds1 requested a review from pstibrany August 24, 2022 08:03
@aknuds1 aknuds1 added the enhancement New feature or request label Aug 24, 2022
@aknuds1 aknuds1 changed the title Metrics: Re-enable metrics removed in prometheus/client_golang 1.12.2 WIP: Metrics: Re-enable metrics removed in prometheus/client_golang 1.12.2 Aug 24, 2022
@bboreham
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I'm a "no thanks" on this pending some specific justification why we need them.
The metrics were only added to Mimir via #1715, 4 months ago, and were removed upstream due to the high cardinality.

I could see adding a mechanism so they can be turned on when required. But again, someone has to actually need them.

@pracucci
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I agree with Bryan. We should re-enable such metrics only if (when) we have a real use case.

@pracucci
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pracucci commented Oct 7, 2022

The CHANGELOG has just been cut to prepare for the next Mimir release. Please rebase main and eventually move the CHANGELOG entry added / updated in this PR to the top of the CHANGELOG document. Thanks!

@aknuds1 aknuds1 closed this Oct 25, 2022
@aknuds1 aknuds1 deleted the chore/re-enable-metrics branch October 25, 2022 15:15
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3 participants