Apache Calcite

最新推荐文章于 2025-05-07 14:32:05 发布

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最新推荐文章于 2025-05-07 14:32:05 发布

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本文链接：https://blog.youkuaiyun.com/SpanningWings/article/details/88047491

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ApacheCalcite提供了一个框架用于Query处理、优化及语言支持，如SQL及其扩展。它旨在解决数据处理系统的开发者独立地面对类似问题，如查询优化和语言支持，导致工程资源浪费。同时，它还解决了使用多个数据源的应用程序集成问题，使得跨异构数据源的优化查询成为可能。

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Apache Calcite是一个Query处理，优化，和Query语言的框架。

好多数据处理Engine内部都采用Calcite来做JDBC，SQL query优化等。参加Powered by Calcite列表

文章中提到

As organizations have invested in data processing systems tailored towards their specific needs, two overarching problems have arisen:
• The developers of such specialized systems have encountered related problems, such as query optimization [4, 25]
or the need to support query languages such as SQL and related extensions (e.g., streaming queries [26]) as well as
language-integrated queries inspired by LINQ [33]. Without a unifying framework, having multiple engineers independently develop similar optimization logic and language support wastes engineering effort.
• Programmers using these specialized systems often have to integrate several of them together. An organization might
rely on Elasticsearch, Apache Spark, and Druid. We need to build systems capable of supporting optimized queries
across heterogeneous data sources [55].

这点很有意思。真的能跨应用来做Query吗？