private boolean entered() {
    return dropDeletesFromRow.length == 0
      || rowComparator.compareRows(currentRow, dropDeletesFromRow, 0, dropDeletesFromRow.length)
          >= 0;
  }
Query matcher for stripe compaction if range drop deletes is used.
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/querymatcher/StripeCompactionScanQueryMatcher.java