Optimizing Delta Parquet Data Lakes for Apache SparkMatthew Powers Prognos

This talk outlines data lake design patterns that can yield massive performance gains for all downstream consumers. We will talk about how to optimize Parquet data lakes and the awesome additional features provided by Databricks Delta. * Optimal file sizes in a data lake * File compaction to fix the small file problem * Why Spark hates globbing S3 files * Partitioning data lakes with partitionBy * Parquet predicate pushdown filtering * Limitations of Parquet data lakes (files aren't mutable!) * Mutating Delta lakes * Data skipping with Delta ZORDER indexes About: Databricks provides a unified data analytics platform, powered by Apache Spark™, that accelerates innovation by unifying data science, engineering and business. Read more here: https://databricks.com/product/unified-data-analytics-platform Connect with us: Website: https://databricks.com Facebook: https://www.facebook.com/databricksinc Twitter: https://twitter.com/databricks LinkedIn: https://www.linkedin.com/company/databricks Instagram: https://www.instagram.com/databricksinc/ Databricks is proud to announce that Gartner has named us a Leader in both the 2021 Magic Quadrant for Cloud Database Management Systems and the 2021 Magic Quadrant for Data Science and Machine Learning Platforms. Download the reports here. https://databricks.com/databricks-named-leader-by-gartner