Following up changes in bbc5f61abb, the cluster_resolver LB policy uses the hostname received in CDS responses for discovering LOGICAL_DNS cluster endpoints.
Based on the new design, TD will generate a CFE cluster called "google_cfe_${service_name}" (e.g., for DirectPath service "cloud-bigtable.googleapis.com", the cluster name will be "google_cfe_cloud-bigtable.googleapis.com") for each DirectPath service. google_default/compute_engine creds will identify CFE clusters by the name having the prefix "google_cfe_".
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