public static byte[] getServerColumn(int replicaId) {
    return replicaId == 0
      ? HConstants.SERVER_QUALIFIER
      : Bytes.toBytes(HConstants.SERVER_QUALIFIER_STR + META_REPLICA_ID_DELIMITER
        + String.format(RegionInfo.REPLICA_ID_FORMAT, replicaId));
  }
Returns the column qualifier for server column for replicaId
@param replicaId the replicaId of the region
@return a byte[] for server column qualifier
hbase-client/src/main/java/org/apache/hadoop/hbase/CatalogFamilyFormat.java