ReadKeyGroupingComparator.java 文件源码

@Override
public int compare(WritableComparable o1, WritableComparable o2) {

    ReadKey rk1 = (ReadKey) o1;
    ReadKey rk2 = (ReadKey) o2;

    if (rk1.sample.equals(rk2.sample)) {

        if (rk1.sequence.equals(rk2.sequence)) {
            return 0;

        } else {
            return rk1.sequence.compareTo(rk2.sequence);
        }
    } else {
        return rk1.sample.compareTo(rk2.sample);

    }

}