@Override
        public String toString() {
            return String.format("Index pages/bytes: %,d / %,d Data pages/bytes: %,d / %,d"
                    + " LongRec pages/bytes: %,d / %,d  MVV pages/records/bytes/antivalues: "
                    + "%,d / %,d / %,d / %,d  Holes %,d Pages pruned %,d", _indexPageCount, _indexBytesInUse,
                    _dataPageCount, _dataBytesInUse, _longRecordPageCount, _longRecordBytesInUse, _mvvPageCount,
                    _mvvCount, _mvvOverhead, _mvvAntiValues, _indexHoleCount, _prunedPageCount);
        }