private void verifyFail(String cmd, IDriver myDriver) throws RuntimeException {
    boolean success = false;
    try {
      success = run(cmd, false, myDriver);
    } catch (AssertionError ae){
      LOG.warn("AssertionError:",ae);
      throw new RuntimeException(ae);
    } catch (Exception e) {
      success = false;
    }
    assertFalse(success);
  }
All the results that are read from the hive output will not preserve
case sensitivity and will all be in lower case, hence we will check against
only lower case data values.
Unless for Null Values it actually returns in UpperCase and hence explicitly lowering case
before assert.
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/TestReplicationScenarios.java