Welcome to Data Toast 🍞 !
Your one-stop shop for all things data! I will be serving up a tasty menu of insights, tips, and best practices. Join me as we explore the world of data, toasting to innovation and unlocking its full potential!
Boosting Spark SQL Performance with Adaptive Query Execution
Adaptive Query Execution (AQE) is a groundbreaking feature introduced in Spark 3.0 that dynamically optimizes query performance at runtime. By utilizing real-time statistics, AQE can adjust query plans based on the actual data characteristics encountered during execution, leading to more efficient and faster query processing. In this blog, I will explore the practical applications of AQE, demonstrating its benefits and capabilities. To illustrate these concepts, I will use Microsoft Fabric notebooks running on runtime 1....
Mastering chained transformations in Spark
When dealing with complex data transformation logic, the key is to break it down into small manageable and testable functional units, this ensures clarity and ease of maintenance throughout your project. The Spark Dataframe API offers a seamless way to manipulate structured data. One particularly handy method within this API is .transform(), which allows for concise chaining of custom transformations, thereby facilitating complex data processing pipelines. In this blog, we’ll embark on a journey to understand the bits and pieces of transformation chains using PySpark, starting from simple transformations and gradually delving into more advanced scenarios....