presto-accumulo/src/main/java/io/prestosql/plugin/accumulo/serializers/StringRowSerializer.java/StringRowSerializer/deserialize
class StringRowSerializer:    @Override
    public void deserialize(Entry<Key, Value> entry)
    {
        if (!columnValues.containsKey(rowIdName)) {
            entry.getKey().getRow(rowId);
            columnValues.put(rowIdName, rowId.toString());
        }

        if (rowOnly) {
            return;
        }

        entry.getKey().getColumnFamily(family);
        entry.getKey().getColumnQualifier(qualifier);

        if (family.equals(ROW_ID_COLUMN) && qualifier.equals(ROW_ID_COLUMN)) {
            return;
        }

        value.set(entry.getValue().get());
        columnValues.put(familyQualifierColumnMap.get(family.toString()).get(qualifier.toString()), value.toString());
    }