本文并非官方文档的简单翻译，而是结合多方信息源和实战经验，对 Spark 3 到 Spark 4 的迁移进行一次系统性梳理。我们将从"必须改"、"容易踩坑"、"值得利用"三个维度，帮助你制定一个清晰的迁移路线图。

Apache Spark创始人Matei Zaharia荣获美国计算机协会（ACM）年度计算奖，奖金25万美元。他在加州大学伯克利分校攻读博士期间开发了Spark，解决了大数据处理门槛高的问题，支持Python、SQL等多种语言，大幅降低使用难度。他还联合创立了估值1300亿美元的Databricks，并参与开发Delta Lake、MLflow等开源项目，对数据分析与AI领域产生了深远影响。

APG Asset Management, with offices in Netherlands, New York and Hong Kong, is seeking a Quant Developer to join the Global PE team in Amsterdam. As a Quant Developer, you work as an expert with data, ...

Nearly 80 percent of organizations now use AI in at least one core business process, according to McKinsey, yet widespread adoption has surfaced a persistent problem: a deep shortage of professionals ...