@Override
    public RecordUpdater getRecordUpdater(Path path, Options options) throws
        IOException {
      return null;
    }
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