backports for HLL estimates in ActivityLog 1.11.x #21220
Merged
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This PR encapsulates the backports for ActivityLog changes to get more correct current month estimates using HLL sketches.
This is a pre-cursor to the ActivityLog backport for 1.11.x. Once merged, we can rebase that PR to get feature parity across 1.11-1.14.
Apologies for the large PR. It may be easiest to review by comparing each backport commit with the original. I can split this up if others think it's worthwhile.