Overview

To reduce alert fatigue, Synthetic tests can be retried when a test run fails. If you have configured a test to be retried on failures, this is a fast retry.

With a fast retry, Datadog runs a Synthetic test multiple times before transitioning the test’s monitor to alert and sending you a notification. For more information about monitors associated with your Synthetic tests, see Use Synthetic Test Monitors.

Group evaluations

While fast retry results are used in the local group evaluation, only the final retry is taken into account in the total group evaluation. The original run and all intermediate retries are discarded from the evaluation.

Local Group Evaluation

Evaluation of the location status.

Total Group Evaluation

Evaluation of the test status.

A run that is still failing after it has reached the maximum number of retries is considered final, and this final result is taken into account in the total group evaluation.

Retries that overlap with other test runs

In this example, a Synthetic test is scheduled to run every three minutes, and has a retry configured to a maximum of two times with a delay of two minutes.

The evaluation only takes the final retry into account for the total group evaluation.

When all retries fail:

Or when a retry is successful:

Note: Depending on what you set for the minFailureDuration and minLocationsFailed parameters, you may see different behavior.

Timestamps

The system populates the timestamp for a final result with the time when the test was retried, not the time the test was originally scheduled. Results are considered at the timestamp when the test was started. Due to the test’s execution time, there may be a small delay before the results become available for the evaluation.

Further reading

Documentation, liens et articles supplémentaires utiles:

Learn about Synthetic test monitorsDOCUMENTATION Learn about Synthetic test runsDOCUMENTATION