第3章 Hadoop分布式计算框架-MapReduce一：判断题1：不同的Map任务之间不能互相通信T二：单选题1：MapReduce 框架提供了一种序列化键 /值对的方法，支持这种序列化的类能够在 Map 和 Reduce 过程中充当键或值，以下说法错误的是A.实现 Writable 接口的类...

【Hadoop】（三）资源管理器 YARN 和分布式计算框架 MapReduce

文章目录前言一、MapReduce 介绍1. 基本介绍2. MR 数据流程方向3. MR 核心思想4. MR运行原理5. 块、切片、 map 、reduce 、组、分区、输出文件之间的关系6. 计算框架二、Hadoop 2.x-MapReduce1. Hadoop YARN2 .Hadoo...

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