Messages During Multi-Cluster Queries
When executing queries within a multi-cluster environment, messages may be generated that indicate the execution progress of the query within the multi-cluster environment:
Results from the cluster at $CLUSTER_URL have been omitted because of version incompatibility.
This indicates that the named cluster within multi-cluster view has a version that is incompatible wtih the multi-cluster search. This may be because the cluster needs to be upgraded, or is in the process of being upgraded.