public static RegionInfo getRegionInfoForDefaultReplica(RegionInfo regionInfo) {
    return getRegionInfoForReplica(regionInfo, DEFAULT_REPLICA_ID);
  }
Returns the RegionInfo for the default replicaId (0). RegionInfo's correspond to a range of a
table, but more than one "instance" of the same range can be deployed which are differentiated
by the replicaId.
@return an RegionInfo object corresponding to the same range (table, start and end key), but
        for the default replicaId.
hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionReplicaUtil.java