@Override
  void initHiveConf() {
    super.initHiveConf();
    hiveConf.setBoolVar(HiveConf.ConfVars.HIVE_VECTORIZATION_ENABLED, true);
  }
Same as TestTxnCommands2 but tests ACID tables with vectorization turned on by
default, and having 'transactional_properties' set to 'default'. This specifically tests the
fast VectorizedOrcAcidRowBatchReader for ACID tables with split-update turned on.
ql/src/test/org/apache/hadoop/hive/ql/TestTxnCommands2WithSplitUpdateAndVectorization.java