@Override
    protected void createComponents(Configuration conf, HStore store, CellComparator comparator)
      throws IOException {
      super.createComponents(conf, store, comparator);
      lastCreatedCompactor = this.compactor;
    }
Test for HBASE-3492 - Test split on empty colfam (no store files).
@throws IOException When the IO operations fail.
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHStore.java