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Appcontext.setamcontainer ResourceRequests

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Hadoop-MapReduce-MRAppMaster启动篇_hadoop mr 如何启动-CSDN博客

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By String dir, Ts.writetoken StorageToStream, appContext.setAMContainer Spec, Appcontext.setamcontainer ResourceRequests
| CSDN
一、源码下载 下面是hadoop官方源码下载地址，我下载的是hadoop-3.2.4，那就一起来看下吧 Index of /dist/hadoop/core 二、上下文 在上一篇<Hadoop-MapReduce-源码跟读-客户端篇>中已经将到：作业提交到ResourceManager，那么对于该Job第一个容器（MRAppMaster）是怎么启动的呢？接下来我们一起来看看 三、结论 MRJobConfig是一个MRJob的配置，里面包含了Map、Reduce、Combine类以及Job名称、用户名称、队列名称、MapTask数量、ReduceTask数量、工作目录，jar在本地的路径、任务超时时间、任务id、输入输出目录，每个任务的内存大小和cpu核数等等。 此外它里面还有一个属性，如下： package org.apache.hadoop.mapreduce; public interface MRJobConfig { //......省略......
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