Files
doris/docs/en
morrySnow ddf7ef9327 [improvement](join) update broadcast join cost algorithm (#8695)
broadcast join cost is used compressed data size currently.
The amount of memory used may be significantly more than estimated.
This patch:
1. add a compressed ratio to broadcast join cost and set to 5 according to the experience.
2. add a new session variable `auto_broadcast_join_threshold` to limit memory used by broadcast in bytes, the default value is 1073741824(1GB)
2022-04-09 19:00:27 +08:00
..
2022-03-31 13:52:13 +08:00
2022-01-28 22:32:50 +08:00

home, heroImage, heroBgImage, heroText, tagline, structure, features, cases, actionText, actionLink, articleText, articleLink
home heroImage heroBgImage heroText tagline structure features cases actionText actionLink articleText articleLink
true /images/home/banner-stats.png /images/home/hero-bg.png
Welcome to
Apache Doris
A fast MPP database for all modern analytics on big data.
title subTitle descriptions image actionText actionLink
Apache Doris
Apache Doris is a modern MPP analytical database product. It can provide sub-second queries and efficient real-time data analysis. With it's distributed architecture, up to 10PB level datasets will be well supported and easy to operate.
Apache Doris can meet various data analysis demands, including history data reports, real-time data analysis, interactive data analysis, and exploratory data analysis. Make your data analysis easier!
/images/home/structure-fresh.png Learn More /en/getting-started/basic-usage
title subTitle list
Apache Doris Core Features
title icon
Modern MPP architecture /images/home/struct.png
title icon
Getting result of a query within one second /images/home/clock.png
title icon
Support standard SQL language, compatible with MySQL protocol /images/home/sql.png
title icon
Vectorized SQL executor /images/home/program.png
title icon
Effective data model for aggregation /images/home/aggr.png
title icon
Rollup, novel pre-computation mechanism /images/home/rollup.png
title icon
High performance, high availability, high reliability /images/home/cpu.png
title icon
easy for operation, Elastic data warehouse for big data /images/home/dev.png
title subTitle list
Apache Doris Users
logo alt
/images/home/logo-meituan.png 美团
logo alt
/images/home/logo-xiaomi.png 小米
logo alt
/images/home/logo-jd.png 京东
logo alt
/images/home/logo-huawei.png 华为
logo alt
/images/home/logo-baidu.png 百度
logo alt
/images/home/logo-weibo.png 新浪微博
logo alt
/images/home/logo-zuoyebang.png 作业帮
logo alt
/images/home/logo-vipkid.png Vipkid
logo alt
/images/home/logo-360.png 360
logo alt
/images/home/logo-shopee.png Shopee
logo alt
/images/home/logo-tantan.png 探探
logo alt
/images/home/logo-kuaishou.png 快手
logo alt
/images/home/logo-sohu.png 搜狐
logo alt
/images/home/logo-yidian.png 一点资讯
logo alt
/images/home/logo-dingdong.png 叮咚买菜
logo alt
/images/home/logo-youdao.png 有道
Quick Start → /en/installing/compilation Latest News /en/article/article-list