@Test
  public void testExternalNoAutoPurge() throws Exception {
    LOG.info("Running " + name.getMethodName());
    testUtil("false", true, false, false, name.getMethodName());
  }
Tests when auto.purge is set to false on a external table, older data is moved to Trash when
insert overwrite table .. is run

@throws Exception
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/TestAutoPurgeTables.java