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最新推荐文章于 2024-04-21 17:41:25 发布

suv1234

最新推荐文章于 2024-04-21 17:41:25 发布

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public class IntKeyAscComparator extends WritableComparator {


protected IntKeyAscComparator() {

super(IntWritable.class, true);


}


@Override

public int compare(WritableComparable a, WritableComparable b) {

return -super.compare(a, b);

}


}
// key按照降序排列

job.setSortComparatorClass(IntKeyAscComparator.class);