public static ExtendedCell createLastOnRow(final byte[] row) {
    return new LastOnRowCell(row, 0, (short) row.length);
  }
Create a Cell that is larger than all other possible Cells for the given Cell's row.
@return Last possible Cell on passed Cell's row.
hbase-common/src/main/java/org/apache/hadoop/hbase/PrivateCellUtil.java