@Override
    public boolean isDelete(Text value) {
      // Alternate between returning deleted and not.  This is easier than actually
      // tracking operations. We test that this is getting properly called by checking that only
      // half the records show up in base files after major compactions.
      lastWasDelete = !lastWasDelete;
      return lastWasDelete;
    }
This is bogus especially with split update acid tables.  This causes compaction to create
delete_delta_x_y where none existed before.  Makes the data layout such as would never be
created by 'real' code path.
ql/src/test/org/apache/hadoop/hive/ql/txn/compactor/CompactorTest.java