hadoop运行wordcount 的相关内容

文章 2023-12-29 来自：开发者社区

使用Hadoop ToolRunner 运行wordcount demo

1.代码package org.jediael.hadoopdemo.toolrunnerdemo; import java.io.IOException; import java.util.StringTokenizer; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.conf.Configured;....

文章 2023-11-10 来自：开发者社区

Hadoop学习笔记：运行wordcount对文件字符串进行统计案例

文/朱季谦我最近使用四台Centos虚拟机搭建了一套分布式hadoop环境，简单模拟了线上上的hadoop真实分布式集群，主要用于业余学习大数据相关体系。其中，一台服务器作为NameNode，一台作为Secondary NameNode，剩下两台当做DataNodes节点服务器，类似下面这样一个架构——NameNodeSecondary NameNodeDataNodesmaster1(192.....

阿里云文档 2023-09-13

如何在EMR的Hadoop集群中运行Spark作业对接DataHub数据_EMR on ECS_开源大数据平台 E-MapReduce(EMR)

本文介绍如何在E-MapReduce的Hadoop集群，运行Spark作业消费DataHub数据、统计数据个数并打印出来。

文章 2023-08-07 来自：开发者社区

Hadoop本地运行模式（Grep案例和WordCount 案例）

前言Hadoop运行模式包括：本地模式、伪分布式模式以及完全分布式模式。这里先介绍本地运行模式运行官方Grep案例提供一些文本文件, grep可以从中找到想要匹配的文本1. 在当前用户主（HOME）目录下面创建一个input目录[ytsky@hadoop101 ~]$ mkdir input2.将Hadoop的xml配置文件复制到input[ytsky@hadoop101 ~]$ cp $HAD....

文章 2023-01-12 来自：开发者社区

hadoop第一个运行实例wordcount

引语：这几周事情比较多，两周没写博客了，这周总算把hadoop的实例给运行起来，然后跑了一下官方的wordcount例子（用于统计文件中单词出现的次数）。接下来是我成功运行实例的记录。运行的前提是安装配置好hadoop（可以参考我上一篇博客：hadoop伪分布式安装记录）运行步骤：1.先准备一个包含单词的文件，然后将这个文件上传到linux服务器上。文件内容:hello world hello ....

阿里云文档 2022-10-28

如何解决Dataphin脚本任务运行报错

问题描述Dataphin脚本任务运行报错“Error while processing statement: FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask“。解决方案上...

文章 2022-06-15 来自：开发者社区

Hadoop集群搭建记录 | 云计算[CentOS7] | 伪分布式集群 Master运行WordCount

写在前面本系列文章索引以及一些默认好的条件在传送门step1 eclipse访问hadoop首先需要明确eclipse安装目录，然后将hadoop-eclipse-plugin_版本号.jar插件放在安装目录的dropins下关于插件，可以通过博主上传到csdn的免费资源获取，链接具体版本可以自己选择：step2 重启并配置eclipse在eclipse界面中依次选择：Window→show v....

文章 2022-06-13 来自：开发者社区

三十二、基于Hadoop伪分布式运行Hadoop自带wordcount案例

环境背景：Hadoop伪分布式已经搭建完成Hadoop2.6.0Hadoop伪分布搭建见：Hadoop伪分布式的搭建详情https://blog.csdn.net/m0_54925305/article/details/118650350?spm=1001.2014.3001.5502https://blog.csdn.net/m0_54925305/article/details/118650....

文章 2022-06-13 来自：开发者社区

Hadoop集群下运行Wordcount程序中途卡顿运行时间过长的解决方案

一、抛出问题在运行jar包时，或者是测试Hadoop的wordcount程序时，不知道你是否会遇到，运行卡顿，总是出不来结果的问题，就是运行出来了，也是等了大半天，这样等下去会不会有点浪费钱，浪费时间的感觉。。。我曾经也遇到这样的问题，卡了我三天的进程，翻过无数大佬们的博客，最终找出了问题的原因：在每个虚拟机分配的内存和CPU资源太少，不能满足Hadoop运行所需的默认资源需求。二、我的问题卡在....

文章 2022-06-13 来自：开发者社区

在Hadoop系统中运行WordCount案例失败解决方法

报错提示:mapreduce.shuffle set in yarn.nodemanager.aux-services is invalid请在yarn-site.xml中添加<property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle&...

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开源大数据平台 E-MapReduce

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