public static boolean isMetaRegionReplicaReplicationEnabled(Configuration conf, TableName tn) {
    return TableName.isMetaTableName(tn) && conf.getBoolean(
      REGION_REPLICA_REPLICATION_CATALOG_CONF_KEY, DEFAULT_REGION_REPLICA_REPLICATION_CATALOG);
  }
Returns True if hbase:meta Region Read Replica is enabled.
hbase-server/src/main/java/org/apache/hadoop/hbase/util/ServerRegionReplicaUtil.java