Limit rule failures panel on Tenants dashboard to 50 groups #9262
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What this PR does
For tenants with a lot of rule groups, the "Failed evaluations rate" panel on the Mimir/Tenants dashboard can end up loading gigabytes of data, eventually crashing the page. Limit the results to the top 50 rule groups, since that should be enough information.
Which issue(s) this PR fixes or relates to
Fixes #
Checklist
CHANGELOG.mdupdated - the order of entries should be[CHANGE],[FEATURE],[ENHANCEMENT],[BUGFIX].about-versioning.mdupdated with experimental features.