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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更新时间 2024-10-14 09:07:21

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开源大数据平台 E-MapReduce

开源大数据平台 E-MapReduce（简称“EMR”）是云原生开源大数据平台，向客户提供简单易集成的Hadoop、Hive、Spark、Flink、Presto、ClickHouse、StarRocks、Delta、Hudi等开源大数据计算和存储引擎服务。

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EMR实时计算实践