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阿里云文档 2026-03-31

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使用限制仅当计算引擎为CDH5.x、CDH6.x、Cloudera Data Platform 7.x、E-MapReduce3.x、E-MapReduce5.x、亚信DP5.3或华为FusionInsight 8.x时，支持管理Hadoop集群。CDH5.xCDH6.xCloudera Data ...

阿里云文档 2025-04-25

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阿里云EMR针对不同业务场景提供了数据湖集群、数据分析集群、实时数据流集群、数据服务集群四类预定义业务场景。若您的业务需集成特定组合的组件，您可创建自定义集群，灵活组合EMR提供的组件，打造适配业务特性的大数据平台。本文将为您介绍这些集群的区别，帮助您快速选型。

阿里云文档 2025-04-18

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与自建Hadoop集群相比，开源大数据开发平台EMR提供弹性资源管理和自动化运维，降低运维复杂度，通过用户管理、数据加密和权限管理等为数据安全保驾护航，同时EMR集成了丰富的开源组件并打通开源生态与阿里云生态，便于快速搭建大数据处理和分析场景。

文章 2024-10-13 来自：开发者社区

Hadoop-09-HDFS集群 JavaClient 代码上手实战！详细附代码安装依赖上传下载文件扫描列表 PUT GET 进度条显示（一）

章节内容上一节完成： HDFS的集群启动 HDFS的命令行操作 HDFS 上传下载移动重命名等操作背景介绍这里是三台公网云服务器，每台 2C4G，搭建一个Hadoop的学习环境，供我学习。之前已经在 VM 虚拟机上搭建过一次，但是没留下笔记，这次趁着前几天薅羊毛的3台机器，赶紧尝试在公网上搭建体验一下。 ...

文章 2024-10-13 来自：开发者社区

Hadoop-09-HDFS集群 JavaClient 代码上手实战！详细附代码安装依赖上传下载文件扫描列表 PUT GET 进度条显示（二）

接上篇：https://developer.aliyun.com/article/1621726?spm=a2c6h.13148508.setting.20.49764f0eWaXqej 展示列表 public static void listList() throws IOEx...

文章 2024-09-04 来自：开发者社区

1 概述HA（high available），即高可用（24h不中断服务）实现高可用最关键的策略是消除单点故障。HA严格来说是应该分成各个组件的HA机制hadoop2.0之前，在HDFS集群中NamNode存在单点故障（SPOF）NameNode主要存在以下两个方敏影响HDFS集群。- NameNode机器发生意外，如宕机，集群无法使用，直到管理员重启。 - NameNode机器需要升级，包括软....

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