@Override
  public byte[] serializeRowId(Object object, StructField field, ByteStream.Output output)
      throws IOException {
    return serializer.serializeRowId(object, field, rowIdMapping);
  }
Default implementation of the AccumuloRowIdFactory which uses the normal
{@link AccumuloRowSerializer} methods to serialize the field for storage into Accumulo.
accumulo-handler/src/java/org/apache/hadoop/hive/accumulo/serde/DefaultAccumuloRowIdFactory.java