[Hadoop] 分布式处理框架MapReduce 二
MapReduce 源代码解析(Hadoop Mapper 定义、Hadoop Reducer 定义、Hadoop Partitioner 定义和默认实现)、MapReduce执行机制、MapReduce 容错性、数据本地性问题、参数调优
MapReduce 源代码解析Hadoop Mapper 定义123456789101112131415161718192021222324public class Mapper<KEYIN, VALUEIN, KEYOUT, VALUEOUT> {public abstract class Contextimplements MapContext<KEYIN,V......