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Ensure that metrics retention is long enough #211

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opened 2025-05-08 17:01:39 +00:00 by raito · 1 comment
raito commented 2025-05-08 17:01:39 +00:00
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We should make use of downsampling to be able to aggregate long term metrics and keep some information over the 10 years, 5 years, 1 year with different downsampling options.

cc @k900

We should make use of downsampling to be able to aggregate long term metrics and keep some information over the 10 years, 5 years, 1 year with different downsampling options. cc @k900
emilylange commented 2025-05-11 11:20:32 +00:00
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Unfortunately, downsampling is currently not implemented nor supported in Mimir.
Most other metrics storage backends however do 🫠

tl;dr for https://github.com/grafana/mimir/discussions/1834#discussioncomment-2727217 and https://github.com/grafana/mimir/pull/5028:

  • s3 storage is cheap
  • downsampling is very IO intensive
  • complicates promql query engine

Most workarounds for this aren't particularly great.
Maybe we defer this for now and lower its priority from "High" to "Medium" or even "Low" and also mark it as blocked (by upstream)?

Unfortunately, downsampling is currently not implemented nor supported in Mimir. Most other metrics storage backends however do 🫠 tl;dr for https://github.com/grafana/mimir/discussions/1834#discussioncomment-2727217 and https://github.com/grafana/mimir/pull/5028: - s3 storage is cheap - downsampling is very IO intensive - complicates promql query engine Most workarounds for this aren't particularly great. Maybe we defer this for now and lower its priority from "High" to "Medium" or even "Low" and also mark it as blocked (by upstream)?
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