protected boolean useMinHistoryWriteId() {
    return false;
  }
in Hive 1.3.0 delta file names changed to delta_xxxx_yyyy_zzzz; prior to that
the name was delta_xxxx_yyyy.  We want to run compaction tests such that both formats
are used since new (1.3) code has to be able to read old files.
ql/src/test/org/apache/hadoop/hive/ql/txn/compactor/CompactorTest.java