This week in Databend #25

原创于 2022-01-24 11:58:48 发布 · 173 阅读

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Databend aimed to be an open source elastic and reliable cloud warehouse, it offers blazing fast query and combines elasticity, simplicity, low cost of the cloud, built to make the Data Cloud easy.

Big changes

Below is a list of some major changes that we don't want you to miss.

Features

support [NOT] IN (a, b, c, ...) InList SQL by @Veeupup (#3805)

Improvement

range filter support more multi-column expression scenarios by @zhyass. (#3851
refine the error code by @BohuTANG. (#3833)
lower the memory usage of BlockStreamWriter by @dantengsky. (#3818)
manage role storage in metasrv by @flaneur2020. (#3878)

Build/Test/CI

introduce databend Dev container by @ZhiHanZ. (#3853)
use peotry to manage all python packages by @Xuanwo. (#3902)

Bug fixes

fix bug that list_databases return all tenants' databases by @ariesdevil. (#3876)
optimize table cause of meta data damage by @dantengsky. (#3873)
fix MySQL 8.0 JDBC compatibility error by @TCeason. (#3852)

Experimental

add datavalues2 by @sundy-li. (#3857).

A series of refactorings will be carried out at datavalues-dev branch to complete the migration. See RFC - new datavalues system design.

Tips

Let's learn a weekly tip from Databend.

Build/Test Databend with Dev container

In #3853 , we have introduced a development container to make it easy for contributors to build and test Databend.

build binary artifacts

./scripts/setup/run_docker.sh  make build

run test

./scripts/setup/run_docker.sh  make test

debug or get into dev container

./scripts/setup/run_docker.sh /bin/bash

Changlogs

You can check the changelogs of Databend nightly to learn about our latest developments.

Ecosystem/Upstream

From open source, for open source. Our team is also committed to contributing to the Rust ecosystem and upstream dependencies.

A ton of updates to openraft. by @drmingdrmer & @lichuang
release naive-cityhash v0.2.0: add basic 64 bit cityhash support. by @PsiACE

Meet Us

Please join the DatafuseLabs Community if you are interested in Databend.

We are looking forward to seeing you try our code. We have a strong team behind you to ensure a smooth experience in trying our code for your projects. If you are a hacker passionate about database internals, feel free to play with our code.

You can submit issues for any problems you find. We also highly appreciate any of your pull requests.