protected InternalScanner createScanner(HStore store, ScanInfo scanInfo,
    List<StoreFileScanner> scanners, long smallestReadPoint, long earliestPutTs,
    byte[] dropDeletesFromRow, byte[] dropDeletesToRow) throws IOException {
    return new StoreScanner(store, scanInfo, scanners, smallestReadPoint, earliestPutTs,
      dropDeletesFromRow, dropDeletesToRow);
  }
@param store              The store.
@param scanners           Store file scanners.
@param smallestReadPoint  Smallest MVCC read point.
@param earliestPutTs      Earliest put across all files.
@param dropDeletesFromRow Drop deletes starting with this row, inclusive. Can be null.
@param dropDeletesToRow   Drop deletes ending with this row, exclusive. Can be null.
@return A compaction scanner.
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/compactions/Compactor.java