aa878e4d48
 [](https://github.com/yaooqinn/kyuubi/pull/387)     [❨?❩](https://pullrequestbadge.com/?utm_medium=github&utm_source=yaooqinn&utm_campaign=badge_info)<!-- PR-BADGE: PLEASE DO NOT REMOVE THIS COMMENT --> <!-- Thanks for sending a pull request! Here are some tips for you: 1. If this is your first time, please read our contributor guidelines: https://kyuubi.readthedocs.io/en/latest/community/contributions.html 2. If the PR is related to an issue in https://github.com/yaooqinn/kyuubi/issues, add '[KYUUBI #XXXX]' in your PR title, e.g., '[KYUUBI #XXXX] Your PR title ...'. 3. If the PR is unfinished, add '[WIP]' in your PR title, e.g., '[WIP][KYUUBI #XXXX] Your PR title ...'. --> ### _Why are the changes needed?_ <!-- Please clarify why the changes are needed. For instance, 1. If you add a feature, you can talk about the use case of it. 2. If you fix a bug, you can clarify why it is a bug. --> In connection level, we will release engine if the session connection is closed but we don't clean up the discovery service (i.e. the namespace in zookeeper). That may cause the disk stress after running a long time. ### _How was this patch tested?_ Add some new suites in spark engine moudle with zk emmbedded. Closes #387 from ulysses-you/issue-386. ccb1112 [ulysses-you] move method 1558dd9 [ulysses-you] test 6cd7e57 [ulysses-you] nit f8559d2 [ulysses-you] check level at engine discovery eedfaee [ulysses-you] split ServiceDiscovery to server and engine 8b20e6c [ulysses-you] timeout 0cf524c [ulysses-you] remove unnecessary test 41d36f9 [ulysses-you] move exception eaaa12d [ulysses-you] avoid stop twice b801c14 [ulysses-you] fix test db39960 [ulysses-you] add start check 2d1f6dd [ulysses-you] add state check e7374aa [ulysses-you] nit ddf383c [ulysses-you] fi ee088be [ulysses-you] nit 3c2013b [ulysses-you] nit 73b386f [ulysses-you] improve conf of test 2185f49 [ulysses-you] init Authored-by: ulysses-you <ulyssesyou18@gmail.com> Signed-off-by: Kent Yao <yao@apache.org> |
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Kyuubi
Kyuubi is a high-performance universal JDBC and SQL execution engine, built on top of Apache Spark. The goal of Kyuubi is to facilitate users to handle big data like ordinary data.
It provides a standardized JDBC interface with easy-to-use data access in big data scenarios. End-users can focus on developing their own business systems and mining data value without having to be aware of the underlying big data platform (compute engines, storage services, metadata management, etc.).
Kyuubi relies on Apache Spark to provide high-performance data query capabilities,
and every improvement in the engine's capabilities can help Kyuubi's performance make a qualitative leap.
In addition, Kyuubi improves ad-hoc responsiveness through the engine caching,
and enhances concurrency through horizontal scaling and load balancing.
It provides complete authentication and authentication services to ensure data and metadata security.
It provides robust high availability and load balancing to help you guarantee the SLA commitments.
It provides a two-level elastic resource management architecture to effectively improve resource utilization while covering the performance and response requirements of all scenarios including interactive,
or batch processing and point queries, or full table scans.
It embraces Spark and builds an ecosystem on top of it,
which allows Kyuubi to quickly expand its existing ecosystem and introduce new features,
such as cloud-native support and Data Lake/Lake House support.
The vision of Kyuubi is to build on top of Apache Spark and Data Lake technologies to unify the portal and become an ideal data lake management platform. It can support data processing e.g. ETL, and analytics e.g. BI in a pure SQL way. All workloads can be done on one platform, using one copy of data, with one SQL interface.
Online Documentation
Since Kyuubi 1.0.0, the Kyuubi online documentation is hosted by https://readthedocs.org/. You can find the specific version of Kyuubi documentation as listed below.
For 0.8 and earlier versions, please check the Github Pages directly.
Quick Start
Ready? Getting Started with Kyuubi.
Contributing
All bits of help are welcome. You can make various types of contributions to Kyuubi, including the following but not limited to,
- Help new users in chat channel or share your success stories with us -
- Improve Documentation -
- Test releases -
- Improve test coverage -
- Report bugs and better help developers to reproduce
- Review changes
- Make a pull request
- Promote to others
- Click the star button if you like this project
Before you start, we recommend that you check the Contribution Guidelines first.
Aside
The project took its name from a character of a popular Japanese manga - Naruto.
The character is named Kyuubi Kitsune/Kurama, which is a nine-tailed fox in mythology.
Kyuubi spread the power and spirit of fire, which is used here to represent the powerful Apache Spark.
Its nine tails stands for end-to-end multi-tenancy support of this project.
License
This project is licensed under the Apache 2.0 License. See the LICENSE file for details.