Option to include quorum zone results for DistributorQueryable metadata API#5779
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Signed-off-by: Ben Ye <benye@amazon.com>
Signed-off-by: Ben Ye <benye@amazon.com>
Signed-off-by: Ben Ye <benye@amazon.com>
alanprot
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Feb 21, 2024
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| if _, ok := resultsPerZone[res.instance.Zone]; !ok { | ||
| resultsPerZone[res.instance.Zone] = make([]interface{}, 0, len(r.Instances)) | ||
| } | ||
| resultsPerZone[res.instance.Zone] = append(resultsPerZone[res.instance.Zone], res.res) |
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Is it possible to have 2 new methods on the tracker interface to hide this logic?
- tracker.RecordResult(instance, result)
- GetQuerumResults
- That for sone aware will return only the zonal results?
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Updated. I combine RecordResult to the existing done method.
GetResults is a general method to return results. Quorum or not is controlled via the flag
Signed-off-by: Ben Ye <benye@amazon.com>
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LGTM!! Nice work! |
alanprot
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Feb 21, 2024
Signed-off-by: Ben Ye <benye@amazon.com>
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What this PR does:
Added a new flag
-distributor.zone-results-quorum-metadatato only include quorum number of zones as query results of metadata APIs like label names, values and series.This helps improve performance and latency. Image we have 3 zones. Now when zone awareness is enabled, we wait for all ingester results from at least 2 zones to be received before returning the results. However, for results from the 3rd zone, we are still trying to merge them. This can be inefficient as the results from 3rd zone are basically duplicates.
Thus, this pr tries to only use results from 2 zones. By having less data to merge, improve the latency as well as memory usage.
Which issue(s) this PR fixes:
Fixes #
Checklist
CHANGELOG.mdupdated - the order of entries should be[CHANGE],[FEATURE],[ENHANCEMENT],[BUGFIX]