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[release-12.0.1] docs(alerting): clarify transition to Recovering state when using recovery thresholds (#105132) 

docs(alerting): clarify transition to Recovering state when using recovery thresholds (#104381)

(cherry picked from commit cf1b964829)
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Pepe Cano 2025-05-08 17:28:58 +02:00 committed by GitHub
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docs/sources/alerting/fundamentals/alert-rules/queries-conditions.md
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@ -124,7 +124,7 @@ If the threshold is set as the alert condition, the alert fires when the thresho
### Recovery threshold
To reduce the noise from flapping alerts, you can set a recovery threshold so that the alert returns to the `Normal` state only after the recovery threshold is crossed.
To reduce the noise from flapping alerts, you can set a recovery threshold so that the alert returns to the `Normal` or `Recovering` state only after the recovery threshold is crossed.
Flapping alerts occur when the query value repeatedly crosses above and below the alert threshold, causing frequent state changes. This results in a series of firing-resolved-firing notifications and a noisy alert state history.
@ -136,8 +136,8 @@ For example, if you have an alert for latency with a threshold of 1000ms and the
To prevent this, you can set a recovery threshold to define two thresholds instead of one:
1. An alert transitions to the `Pending` or `Alerting` state when the alert threshold is crossed.
1. An alert transitions back to `Normal` state only after the recovery threshold is crossed.
1. An alert transitions to the `Pending` or `Alerting` state when it crosses the alert threshold.
1. It then transitions to the `Recovering` or `Normal` state only when it crosses the recovery threshold.
In the previous example, setting the recovery threshold to 900ms means the alert only resolves when the latency falls below 900ms: