Spark SQL code generation articles

The why of code generation in Apache Spark SQL

By the end of 2018 I published a post about code generation in Apache Spark SQL where I answered the questions about who, when, how and what. But I omitted the "why" and cozos created an issue on my Github to complete the article. Something I will try to do here.

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The who, when, how and what of Apache Spark SQL code generation

The code generated by Apache Spark for all the queries defined with higher-level concepts as SQL queries is the key to understand the processing logic performance. This post, started after a discussion on my Github, tries to explain some of the basics of code generation workflow.

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Generated code in Spark SQL

One of powerful features of Spark SQL is dynamic generation of code. Several different layers are generated and this post explains some of them.

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