hadoop数据压缩-阿里云

Hadoop学习：深入解析MapReduce的大数据魔力之数据压缩（四）

4.1 概述1）压缩的好处和坏处压缩的优点：以减少磁盘IO、减少磁盘存储空间。压缩的缺点：增加CPU开销。2）压缩原则（1）运算密集型的Job，少用压缩（2）IO密集型的Job，多用压缩4.2 MR 支持的压缩编码1）压缩算法对比介绍2...

Hadoop学习---8、Hadoop数据压缩

1、Hadoop数据压缩1.1 概述1、压缩的好处和坏处（1）优点：减少磁盘IO、减少磁盘储存空间（2）缺点：增加CPU开销2、压缩原则（1）运算密集型的Job，少用压缩（2）IO密集型的Job，多用压缩1.2 MR支持的压缩编码...

大数据实战项目：反爬虫系统（Lua+Spark+Redis+Hadoop框架搭建）第一阶段

33 课时 |

283 人已学 |

加入学习

大数据实战项目：反爬虫系统（Lua+Spark+Redis+Hadoop框架搭建）第二阶段

28 课时 |

248 人已学 |

加入学习

大数据实战项目：反爬虫系统（Lua+Spark+Redis+Hadoop框架搭建）第三阶段

25 课时 |

92 人已学 |

加入学习

hadoop之数据压缩(12)

hadoop数据压缩你好！这是你第一次使用 Markdown编辑器所展示的欢迎页。如果你想学习如何使用Markdown编辑器, 可以仔细阅读这篇文章，了解一下Markdown的基本语法知识。概述压缩技术能够有效减少底层存储系统（HDFS）读写字节数。压缩提高了网络带宽和磁盘空间的效率。在Hado...

Hadoop Hive概念学习系列之hive的数据压缩（七）

Hive文件存储格式包括以下几类： 1、TEXTFILE 2、SEQUENCEFILE 3、RCFILE 4、ORCFILE 其中TEXTFILE为默认格式，建表时不指定默认为这个格式，导入数据时会直接把数据文件拷贝到hdfs上不进行处理。 SEQUENCEFILE，RCFILE，ORCFILE格式...

hadoop mapreduce开发实践之输出数据压缩

1、hadoop 输出数据压缩 1.1、为什么要压缩？输出数据较大时，使用hadoop提供的压缩机制对数据进行压缩，可以指定压缩的方式。减少网络传输带宽和存储的消耗；可以对map的输出进行压缩（map输出到reduce输入的过程，可以shuffle过程中网络传输的数据量）可以对reduce的输...

共有5条

< 1 >

跳转至： GO

更新时间 2023-09-27 12:51:02

本页面内关键词为智能算法引擎基于机器学习所生成，如有任何问题，可在页面下方点击"联系我们"与我们沟通。

产品推荐

{"moduleinfo":{"card_count":[{"count_phone":1,"count":1}],"search_count":[{"count_phone":2,"count":2}]},"card":[{"des":"基于阿里云 E-MapReduce 、OSS 、边缘网络加速等产品及服务，帮助自建 Hadoop 用户快速构建云上半托管开源大数据平台，帮助客户更加便捷地迭代企业大数据平台架构，聚焦业务价值开发。","link1":"https://www.aliyun.com/solution/growth-service/slemr","link":"https://www.aliyun.com/solution/growth-service/slemr","icon":"https://img.alicdn.com/imgextra/i4/O1CN01K9Svmd1sBvo2u5PKn_!!6000000005729-2-tps-201-200.png","btn2":"立即咨询","tip":"更多优质解决方案 <a href=\"https://www.aliyun.com/solution/all \" target=\"_blank\"> 立即查看 <a href=\"https://page.aliyun.com/form/act1851795571/index.htm\" target=\"_blank\">立即咨询","btn1":"方案详情","link2":"https://www.aliyun.com/core/online-consult?from=F9OmJ488XR","title":"中小企业自建Hadoop集群上云解决方案"}],"search":[{"txt":"企业跨地域网络互通","link":"https://www.aliyun.com/solution/growth-general/slcrossregionnetwork"},{"link":"https://www.aliyun.com/solution/growth-general/slhhyxsxxsh","txt":"混合云线下线上双活"}],"countinfo":{"search":{"length_pc":0,"length":0},"card":{"length_pc":0,"length":0}},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"img","iconImg":"https://img.alicdn.com/imgextra/i1/O1CN014XEWEW1hMVB3Ydp04_!!6000000004263-0-tps-200-200.jpg","btn1":"方案详情","btn3":"查看更多方案","btn2":"立即咨询","link3":"https://www.aliyun.com/solution/all","link2":"https://www.aliyun.com/core/online-consult?from=F9OmJ488XR","link":"https://www.aliyun.com/solution/growth-service/slemr","contentLink":"https://www.aliyun.com/solution/growth-service/slemr","link1":"https://www.aliyun.com/solution/growth-service/slemr","title":"中小企业自建Hadoop集群上云解决方案","des":"基于阿里云 E-MapReduce 、OSS 、边缘网络加速等产品及服务，帮助自建 Hadoop 用户快速构建云上半托管开源大数据平台，帮助客户更加便捷地迭代企业大数据平台架构，聚焦业务价值开发。","infoGroup":[{"infoName":"推荐搜索","infoContent":{"firstContentName":"企业跨地域网络互通","firstContentLink":"https://www.aliyun.com/solution/growth-general/slcrossregionnetwork","lastContentName":"混合云线下线上双活","lastContentLink":"https://www.aliyun.com/solution/growth-general/slhhyxsxxsh"}}]}]}

{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"moduleinfo":{"card_count":[{"count_phone":1,"count":1}],"search_count":[{"count_phone":2,"count":2}]},"card":[{"des":"基于阿里云 E-MapReduce 、OSS 、边缘网络加速等产品及服务，帮助自建 Hadoop 用户快速构建云上半托管开源大数据平台，帮助客户更加便捷地迭代企业大数据平台架构，聚焦业务价值开发。","link1":"https://www.aliyun.com/solution/growth-service/slemr","link":"https://www.aliyun.com/solution/growth-service/slemr","icon":"https://img.alicdn.com/imgextra/i4/O1CN01K9Svmd1sBvo2u5PKn_!!6000000005729-2-tps-201-200.png","btn2":"立即咨询","tip":"更多优质解决方案 <a href=\"https://www.aliyun.com/solution/all \" target=\"_blank\"> 立即查看 <a href=\"https://page.aliyun.com/form/act1851795571/index.htm\" target=\"_blank\">立即咨询","btn1":"方案详情","link2":"https://www.aliyun.com/core/online-consult?from=F9OmJ488XR","title":"中小企业自建Hadoop集群上云解决方案"}],"search":[{"txt":"企业跨地域网络互通","link":"https://www.aliyun.com/solution/growth-general/slcrossregionnetwork"},{"link":"https://www.aliyun.com/solution/growth-general/slhhyxsxxsh","txt":"混合云线下线上双活"}],"countinfo":{"search":{"length_pc":0,"length":0},"card":{"length_pc":0,"length":0}},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"img","iconImg":"https://img.alicdn.com/imgextra/i1/O1CN014XEWEW1hMVB3Ydp04_!!6000000004263-0-tps-200-200.jpg","btn1":"方案详情","btn3":"查看更多方案","btn2":"立即咨询","link3":"https://www.aliyun.com/solution/all","link2":"https://www.aliyun.com/core/online-consult?from=F9OmJ488XR","link":"https://www.aliyun.com/solution/growth-service/slemr","contentLink":"https://www.aliyun.com/solution/growth-service/slemr","link1":"https://www.aliyun.com/solution/growth-service/slemr","title":"中小企业自建Hadoop集群上云解决方案","des":"基于阿里云 E-MapReduce 、OSS 、边缘网络加速等产品及服务，帮助自建 Hadoop 用户快速构建云上半托管开源大数据平台，帮助客户更加便捷地迭代企业大数据平台架构，聚焦业务价值开发。","infoGroup":[{"infoName":"推荐搜索","infoContent":{"firstContentName":"企业跨地域网络互通","firstContentLink":"https://www.aliyun.com/solution/growth-general/slcrossregionnetwork","lastContentName":"混合云线下线上双活","lastContentLink":"https://www.aliyun.com/solution/growth-general/slhhyxsxxsh"}}]}]}}