接口 org.apache.hadoop.mapred.lib.InputSampler.Sampler
的使用

使用InputSampler.Sampler的程序包

程序包	说明
org.apache.hadoop.mapred.lib	Library of generally useful mappers, reducers, and partitioners.

org.apache.hadoop.mapred.lib中InputSampler.Sampler的使用

实现InputSampler.Sampler的org.apache.hadoop.mapred.lib中的类

限定符和类型	类和说明
static class	InputSampler.IntervalSampler<K,V> Sample from s splits at regular intervals.
static class	InputSampler.RandomSampler<K,V> Sample from random points in the input.
static class	InputSampler.SplitSampler<K,V> Samples the first n records from s splits.

参数类型为InputSampler.Sampler的org.apache.hadoop.mapred.lib中的方法

限定符和类型	方法和说明
static <K,V> void	InputSampler.writePartitionFile(JobConf job, InputSampler.Sampler<K,V> sampler) Write a partition file for the given job, using the Sampler provided.