@Override
    public org.apache.hadoop.hive.ql.exec.FileSinkOperator.RecordWriter getHiveRecordWriter(JobConf jc, Path finalOutPath,
                                              Class<? extends Writable> valueClass,
                                              boolean isCompressed, Properties tableProperties,
                                              Progressable progress) 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