看下定義,繼承了WritableComparable接口.這個說明什么呢? public class LongWritable
extends Object
implements org.apache.hadoop.io.WritableComparable<LongWritable> 屬性 就一個 value private long value; 然后get set方法,常規操作 /** Set the value of this
How did it all start- huge data on the web!Nutch built to crawl this web dataHuge data had to saved- HDFS was born!How to use this data?Map reduce framework built for coding and running analytics – java, any language-streaming/pipesHow to get in unstru