JavaPairRDD<String, Float> counts = ones
.reduceByKey(new Function2<Float, Float, Float>() {
@Override
public Float call(Float i1, Float i2) {
return i1 + i2;
}
});
我的输出如下所示:
id,value
100002,23.47
100003,42.78
200003,50.45
190001,30.23
我希望输出按值排序,类似于:
200003,50.45
100003,42.78
190001,30.23
100002,23.47
我该如何实现这个目标?