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This alert means that the Coordinator has been wanting to add a replica of a segment for at least

replicantLifetime

runs (by default: 15 runs) and has not been able to. By default, Coordinator runs occur once a minute, so that's 15 minutes. However, this can be overridden by setting

druid.coordinator.period

to something else. If an environment does happen to have a more aggressive setting for

druid.coordinator.period

then I would suggest either restoring the default setting, or increasing

replicantLifetime

to make the alerting less sensitive. Search on this page for

replicantLifetime

and

druid.coordinator.period

for more details: https://druid.apache.org/docs/latest/configuration/index.html Also check if any issues with datanodes , are they often going down?

The datanodes are not going down. We are using the default for coordinator.period which is 1 min. I decreased the replicant lifetime to 3 to see if this would decrease the amount the errors. We also experiencing this issue https://apachedruidworkspace.slack.com/archives/C0309C9L90D/p1686513388513769 This is the distribution of errors.