Commit Graph

1 Commits (d3dfe486fc99d0a96f89c87225c871685765f967)

Author SHA1 Message Date
zenador ccfe14d7e7
PromQL: ignore small errors for bucketQuantile (#13153)
promql: Improve histogram_quantile calculation for classic buckets

Tiny differences between classic buckets are most likely caused by floating point precision issues. With this commit, relative changes below a certain threshold are ignored. This makes the result of histogram_quantile more meaningful, and also avoids triggering the _input to histogram_quantile needed to be fixed for monotonicity_ annotations in unactionable cases.

This commit also adds explanation of the new adjustment and of the monotonicity annotation to the documentation of `histogram_quantile`.

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Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com>
2023-11-25 00:05:38 +01:00