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Draft: PoC metric rollups#1700

Draft

harkishen wants to merge 12 commits intotimescale:masterfrom

harkishen:poc_metric_rollups

Commits on Sep 9, 2022

PoC: Add recommendation logic for best possible resolution based on the range.
harkishen
committed

Commits on Sep 14, 2022

PoC: [WIP] Update querier to support rollup querying.
harkishen
committed

Commits on Sep 15, 2022

PoC: refactor rollup implementation and fix sending `__column__` in response series.
harkishen
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PoC: Update PromQL engine to avoid sending unecessary samples due to in-between steps (between rollup duration).
harkishen
committed

Commits on Sep 16, 2022

PoC: Use rollup interval in PromQL engine range to avoid unnecessary samples.
harkishen
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Commits on Sep 20, 2022

Commits on Sep 21, 2022

Prepare for PoC demo.
harkishen
committed

Commits on Sep 22, 2022

Preparing for demo.
harkishen
committed

Commits on Sep 26, 2022

Improve avg_over_time() instant query by using sum(sum) / sum(count)
harkishen
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Commits on Sep 28, 2022

Add PromQL optimizer for other metric types and rollupIterator to avoid empty responses.
harkishen
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Commits on Oct 3, 2022

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harkishen
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