What Is Delta Lake? Complete Beginner’s Guide Before formats like Delta Lake existed, a “data lake” was really just a folder of Parquet or CSV files in cloud storage, and that folder had none of the guarantees you’d expect from an actual database table. A […]
Apache Hudi Tutorial for Beginners Apache Iceberg and Delta Lake both solve the “a folder of files isn’t a table” problem well, but neither one started life solving the specific problem Apache Hudi was built around: how do you continuously stream row-level changes, inserts, updates, […]
Apache Iceberg vs Delta Lake Both formats set out to solve the same problem: a folder of Parquet files in object storage isn’t a table, it has no atomic writes, no consistent view during concurrent access, and no schema guarantees. Apache Iceberg and Delta Lake […]
Apache Iceberg Tutorial for Beginners For years, a “data lake” table meant a folder full of Parquet files and a lot of hope. There was no real schema enforcement, no way to safely have two jobs write to the same table at once, and adding […]