Cross-cluster field-caps should return a list of skipped clusters

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Cross-cluster field-caps should return a list of skipped clusters #113394

Open quux00 opened 1 hour ago

quux00 commented 1 hour ago

Description

In ES|QL we need to determine whether, during the field-caps action, any clusters were skipped due to not be available. Add logic to record this and include a list of missing/skipped clusters in the FieldCapsResponse.

We could do this either in the core field-caps action or ES|QL could fully fork field-caps (into EsqlResolveFieldsAction) when we do this.

Once done, we can remove the logic in IndexResolver to detect which clusters are missing.

elasticsearchmachine commented 1 hour ago

Pinging @elastic/es-analytical-engine (Team:Analytics)