@Override
    protected Double[] initializeFixedPointValues() {
      return new Double[] {-5638.15, -863.257, 2563.58, 9763215.5639};
    }
Base class for type specific batch generators. Each type specific batch generator implements
generateRandomNonNullValue to generate random values, and initializeFixedPointValues to
specify a set of fixed values within the data (this is useful when defining query predicates)
ql/src/test/org/apache/hadoop/hive/ql/exec/vector/util/OrcFileGenerator.java