@Override
    protected boolean trySkipToNextColumn(ExtendedCell cell) throws IOException {
      boolean optimized = super.trySkipToNextColumn(cell);
      LOG.info("Cell=" + cell + ", nextIndex=" + CellUtil.toString(getNextIndexedKey(), false)
        + ", optimized=" + optimized);
      if (optimized) {
        optimization.incrementAndGet();
      }
      return optimized;
    }
A StoreScanner for our CELL_GRID above. Fakes the block transitions. Does counts of calls to
optimize and counts of when optimize actually did an optimize.
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestStoreScanner.java