@Test
  public void testMultiKeyDoubleShortString() throws HiveException {
    short s = 2;
    testMultiKey(
        "sum",
        new FakeVectorRowBatchFromObjectIterables(
            2,
            new String[] {"double", "smallint", "string", "double"},
            Arrays.asList(new Object[]{null,  1.0, 1.0,  null,  2.0,  2.0, null}),
            Arrays.asList(new Object[]{null,  s,     s,  null,    s,    s, null}),
            Arrays.asList(new Object[]{ "A", "A",  "A",   "C", null, null,  "A"}),