private Path getTableRelativePath(byte[] tableNameBytes) {
        String tableName = Bytes.toString(tableNameBytes);
        String[] tableNameParts = tableName.split(":");
        Path tableRelPath = new Path(tableNameParts[0]);
        if (tableNameParts.length > 1) {
          tableRelPath = new Path(tableRelPath, tableNameParts[1]);
        }
        return tableRelPath;
      }
ExtendedCell and ExtendedCellSerialization are InterfaceAudience.Private. We expose this config
for internal usage in jobs like WALPlayer which need to use features of ExtendedCell.
hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/HFileOutputFormat2.java