public static KeyValue createLastOnRow(final byte[] row) {
    return new KeyValue(row, null, null, HConstants.LATEST_TIMESTAMP, KeyValue.Type.Minimum);
  }
Creates a KeyValue that is last on the specified row id. That is, every other possible KeyValue
for the given row would compareTo() less than the result of this call.
@param row row key
@return Last possible KeyValue on passed <code>row</code>
hbase-common/src/main/java/org/apache/hadoop/hbase/KeyValueUtil.java