Databend 开源周报
      • Sharing URL Link copied
      • /edit
      • View mode
        • Edit mode
        • View mode
        • Book mode
        • Slide mode
        Edit mode View mode Book mode Slide mode
      • Customize slides
      • Note Permission
      • Read
        • Owners
        • Signed-in users
        • Everyone
        Owners Signed-in users Everyone
      • Write
        • Owners
        • Signed-in users
        • Everyone
        Owners Signed-in users Everyone
      • Engagement control Commenting, Suggest edit, Emoji Reply
    • Invite by email
      Invitee

      This note has no invitees

    • Publish Note

      Share your work with the world Congratulations! 🎉 Your note is out in the world Publish Note

      Your note will be visible on your profile and discoverable by anyone.
      Your note is now live.
      This note is visible on your profile and discoverable online.
      Everyone on the web can find and read all notes of this public team.
      See published notes
      Unpublish note
      Please check the box to agree to the Community Guidelines.
      View profile
    • Commenting
      Permission
      Disabled Forbidden Owners Signed-in users Everyone
    • Enable
    • Permission
      • Forbidden
      • Owners
      • Signed-in users
      • Everyone
    • Suggest edit
      Permission
      Disabled Forbidden Owners Signed-in users Everyone
    • Enable
    • Permission
      • Forbidden
      • Owners
      • Signed-in users
    • Emoji Reply
    • Enable
    • Versions and GitHub Sync
    • Note settings
    • Note Insights New
    • Engagement control
    • Make a copy
    • Transfer ownership
    • Delete this note
    • Insert from template
    • Import from
      • Dropbox
      • Google Drive
      • Gist
      • Clipboard
    • Export to
      • Dropbox
      • Google Drive
      • Gist
    • Download
      • Markdown
      • HTML
      • Raw HTML
Menu Note settings Note Insights Versions and GitHub Sync Sharing URL Help
Menu
Options
Engagement control Make a copy Transfer ownership Delete this note
Import from
Dropbox Google Drive Gist Clipboard
Export to
Dropbox Google Drive Gist
Download
Markdown HTML Raw HTML
Back
Sharing URL Link copied
/edit
View mode
  • Edit mode
  • View mode
  • Book mode
  • Slide mode
Edit mode View mode Book mode Slide mode
Customize slides
Note Permission
Read
Owners
  • Owners
  • Signed-in users
  • Everyone
Owners Signed-in users Everyone
Write
Owners
  • Owners
  • Signed-in users
  • Everyone
Owners Signed-in users Everyone
Engagement control Commenting, Suggest edit, Emoji Reply
  • Invite by email
    Invitee

    This note has no invitees

  • Publish Note

    Share your work with the world Congratulations! 🎉 Your note is out in the world Publish Note

    Your note will be visible on your profile and discoverable by anyone.
    Your note is now live.
    This note is visible on your profile and discoverable online.
    Everyone on the web can find and read all notes of this public team.
    See published notes
    Unpublish note
    Please check the box to agree to the Community Guidelines.
    View profile
    Engagement control
    Commenting
    Permission
    Disabled Forbidden Owners Signed-in users Everyone
    Enable
    Permission
    • Forbidden
    • Owners
    • Signed-in users
    • Everyone
    Suggest edit
    Permission
    Disabled Forbidden Owners Signed-in users Everyone
    Enable
    Permission
    • Forbidden
    • Owners
    • Signed-in users
    Emoji Reply
    Enable
    Import from Dropbox Google Drive Gist Clipboard
       Owned this note    Owned this note      
    Published Linked with GitHub
    • Any changes
      Be notified of any changes
    • Mention me
      Be notified of mention me
    • Unsubscribe
    --- title: Databend 开源周报第 75 期 description: 本期特别发布 Databend 2022 年度总结以及 Databend 2023 年度路线图,感兴趣的朋友一定不要错过。 slug: databend-weekly-75 date: 2022-01-09 tags: [weekly] cover_url: databend-weekly.svg image: databend-weekly.png authors: - datafuselabs --- # Databend 开源周报 第 75 期 ![databend weekly](https://i.imgur.com/DqRbPYS.png) > 英文版移步:https://databend.rs/blog/2023-01-04-databend-weekly > > [Databend](https://github.com/datafuselabs/databend) 是一款强大的云数仓。专为弹性和高效设计。自由且开源。即刻体验云服务:[https://app.databend.com](https://app.databend.com) 。 ## What's New 探索 Databend 本周新进展,遇到更贴近你心意的 Databend 。 ### Features & Improvements ✨ **Format** - 实现 JSON 输出格式 ([#9447](https://github.com/datafuselabs/databend/pull/9447)) **Query** - 检查连接参数 ([#9437](https://github.com/datafuselabs/databend/pull/9437)) - 新增 `max_query_row_nums` 设置 ([#9406](https://github.com/datafuselabs/databend/pull/9406)) **Storage** - 为 hive catalog 实现 prewhere 支持 ([#9427](https://github.com/datafuselabs/databend/pull/9427)) - 为不同的 object reader 设计统一的 cache trait ([#9436](https://github.com/datafuselabs/databend/pull/9436)) - 为新 cache 增加更多观测指标 ([#9445](https://github.com/datafuselabs/databend/pull/9445)) **New Expression** - 迁移 hash 函数到 functions-v2 ([#9402](https://github.com/datafuselabs/databend/pull/9402)) **Sqllogictest** - 并行执行所有测试 ([#9400](https://github.com/datafuselabs/databend/pull/9400)) ### Code Refactoring 🎉 **Storage** - 为 `CachedObject` 实现 `to_bytes` 和 `from_bytes` ([#9439](https://github.com/datafuselabs/databend/pull/9439)) - 重构 table-meta 和 parquet reader ([#9434](https://github.com/datafuselabs/databend/pull/9434)) - 将 fuse_snapshot 单元测试转化为 SQL 逻辑测试 ([#9428](https://github.com/datafuselabs/databend/pull/9428)) ### Bug Fixes 🔧 **Format** - `read_split` 时使用 catch unwind 停止 panic 展开 ([#9420](https://github.com/datafuselabs/databend/pull/9420)) **User** - 惰性加载 JWKS ([#9446](https://github.com/datafuselabs/databend/pull/9446)) **Planner** - Stage URL 的路径应当以 `/` 结尾 ([#9450](https://github.com/datafuselabs/databend/pull/9450)) ## What's On In Databend 请持续关注 Databend 的最新动态。 #### Databend 2022 年终总结 让我们回顾一下,看看 Databend 在 2022 年的表现。 - 开源:新获得 2000 多颗 star ,合并了超过 2400 多个 PR ,解决 1900 余个问题。 - 从 Data Warehouse 到 Lakehouse :全新设计,大量功能增强。 - 更全面的测试:引入 SQL 逻辑测试,实现 SQLancer 全部三种方法,和 <https://perf.databend.rs> 。 - 建立生态:更多的客户选择、信任并与 Databend 一起成长,包括快手科技和 SAP 。 - Databend Cloud:建立在 Databend 之上的下一代大数据分析平台,目前有两个可用区供大家试用。 祝大家新年快乐,并期待大家能够一起参与到 Databend 社区建设之中。 **阅读以下材料以了解更多讯息:** - [Blog | Databend 2022 Recap](https://databend.rs/blog/2022-12-31-databend-2022-recap) ### Databend 2023 路线图 随着新一年的到来,Databend 团队也在积极规划 2023 年的路线图。 我们将继续打磨 Planner ,并在数据缓存和查询结果缓存上下功夫。列表中还包括强化对 PB 级数据量的存储和查询的能力。 欢迎感兴趣的朋友试用一下 Databend 并加入对路线图的讨论。 **阅读以下材料以了解更多讯息:** - [Issue | Roadmap 2023](https://github.com/datafuselabs/databend/issues/9448) ## What's Up Next 我们始终对前沿技术和创新理念持开放态度,欢迎您加入社区,为 Databend 注入活力。 #### Profile-Guided Optimization (PGO) PGO 的基本概念是收集关于一个程序典型的执行数据 (例如,它可能会执行的哪些分支)然后使用该数据来进行如内联,机器码布局,寄存器分配等告知优化。 rustc 支持 profile-guided optimization (PGO) 。Databend 团队期待可以使用这一技术来提供优化的构建。 [Issue 9387: Feature: Add PGO Support](https://github.com/datafuselabs/databend/issues/9387) 如果你对这个主题感兴趣,可以尝试解决其中的部分问题或者参与讨论和 PR review 。或者,你可以点击 https://link.databend.rs/i-m-feeling-lucky 来挑选一个随机问题,祝好运! ## Changelogs 前往查看 Databend 每日构建的变更日志,以了解开发的最新动态。 地址:https://github.com/datafuselabs/databend/releases ## Contributors 非常感谢贡献者们在本周的卓越工作。 ![](https://i.imgur.com/0WHCeGb.png) ![](https://i.imgur.com/VWVsUVU.png) ![](https://i.imgur.com/B5dAU0s.png) ## Connect With Us Databend 是一款开源、弹性、低成本,基于对象存储也可以做实时分析的新式数仓。期待您的关注,一起探索云原生数仓解决方案,打造新一代开源 Data Cloud。 - [Databend Website](https://databend.rs) - [GitHub Discussions](https://github.com/datafuselabs/databend/discussions) - [Twitter](https://twitter.com/Datafuse_Labs) - [Slack Channel](https://link.databend.rs/join-slack)

    Import from clipboard

    Paste your markdown or webpage here...

    Advanced permission required

    Your current role can only read. Ask the system administrator to acquire write and comment permission.

    This team is disabled

    Sorry, this team is disabled. You can't edit this note.

    This note is locked

    Sorry, only owner can edit this note.

    Reach the limit

    Sorry, you've reached the max length this note can be.
    Please reduce the content or divide it to more notes, thank you!

    Import from Gist

    Import from Snippet

    or

    Export to Snippet

    Are you sure?

    Do you really want to delete this note?
    All users will lose their connection.

    Create a note from template

    Create a note from template

    Oops...
    This template has been removed or transferred.
    Upgrade
    All
    • All
    • Team
    No template.

    Create a template

    Upgrade

    Delete template

    Do you really want to delete this template?
    Turn this template into a regular note and keep its content, versions, and comments.

    This page need refresh

    You have an incompatible client version.
    Refresh to update.
    New version available!
    See releases notes here
    Refresh to enjoy new features.
    Your user state has changed.
    Refresh to load new user state.

    Sign in

    Forgot password

    or

    By clicking below, you agree to our terms of service.

    Sign in via Facebook Sign in via Twitter Sign in via GitHub Sign in via Dropbox Sign in with Wallet
    Wallet ( )
    Connect another wallet

    New to HackMD? Sign up

    Help

    • English
    • 中文
    • Français
    • Deutsch
    • 日本語
    • Español
    • Català
    • Ελληνικά
    • Português
    • italiano
    • Türkçe
    • Русский
    • Nederlands
    • hrvatski jezik
    • język polski
    • Українська
    • हिन्दी
    • svenska
    • Esperanto
    • dansk

    Documents

    Help & Tutorial

    How to use Book mode

    Slide Example

    API Docs

    Edit in VSCode

    Install browser extension

    Contacts

    Feedback

    Discord

    Send us email

    Resources

    Releases

    Pricing

    Blog

    Policy

    Terms

    Privacy

    Cheatsheet

    Syntax Example Reference
    # Header Header 基本排版
    - Unordered List
    • Unordered List
    1. Ordered List
    1. Ordered List
    - [ ] Todo List
    • Todo List
    > Blockquote
    Blockquote
    **Bold font** Bold font
    *Italics font* Italics font
    ~~Strikethrough~~ Strikethrough
    19^th^ 19th
    H~2~O H2O
    ++Inserted text++ Inserted text
    ==Marked text== Marked text
    [link text](https:// "title") Link
    ![image alt](https:// "title") Image
    `Code` Code 在筆記中貼入程式碼
    ```javascript
    var i = 0;
    ```
    var i = 0;
    :smile: :smile: Emoji list
    {%youtube youtube_id %} Externals
    $L^aT_eX$ LaTeX
    :::info
    This is a alert area.
    :::

    This is a alert area.

    Versions and GitHub Sync
    Get Full History Access

    • Edit version name
    • Delete

    revision author avatar     named on  

    More Less

    Note content is identical to the latest version.
    Compare
      Choose a version
      No search result
      Version not found
    Sign in to link this note to GitHub
    Learn more
    This note is not linked with GitHub
     

    Feedback

    Submission failed, please try again

    Thanks for your support.

    On a scale of 0-10, how likely is it that you would recommend HackMD to your friends, family or business associates?

    Please give us some advice and help us improve HackMD.

     

    Thanks for your feedback

    Remove version name

    Do you want to remove this version name and description?

    Transfer ownership

    Transfer to
      Warning: is a public team. If you transfer note to this team, everyone on the web can find and read this note.

        Link with GitHub

        Please authorize HackMD on GitHub
        • Please sign in to GitHub and install the HackMD app on your GitHub repo.
        • HackMD links with GitHub through a GitHub App. You can choose which repo to install our App.
        Learn more  Sign in to GitHub

        Push the note to GitHub Push to GitHub Pull a file from GitHub

          Authorize again
         

        Choose which file to push to

        Select repo
        Refresh Authorize more repos
        Select branch
        Select file
        Select branch
        Choose version(s) to push
        • Save a new version and push
        • Choose from existing versions
        Include title and tags
        Available push count

        Pull from GitHub

         
        File from GitHub
        File from HackMD

        GitHub Link Settings

        File linked

        Linked by
        File path
        Last synced branch
        Available push count

        Danger Zone

        Unlink
        You will no longer receive notification when GitHub file changes after unlink.

        Syncing

        Push failed

        Push successfully