Discover optimization techniques for Spark SQL jobs in this 21-minute Databricks conference talk. Learn how to improve performance in large-scale big data clusters using parallel and asynchronous I/O operations. Explore file-level and row group-level parallel read implementations, asynchronous spill optimization, and the innovative parquet column family design. Gain insights into how these techniques can accelerate Apache Spark jobs, potentially improving end-to-end performance by 5% to 30%. Delve into the implementation details of these features and understand their impact on job acceleration in EB-level data platforms.