Trino on Ice IV: Deep Dive Into Iceberg Internals

In the "Trino on Ice IV: Deep Dive Into Iceberg Internals" blog post, the implementation details of the Iceberg table format in conjunction with the Trino query engine are explored, building on earlier posts in the series. The article delves into the structure and function of various files, such as metadata and snapshot files, generated during Iceberg table operations, using tools like Trino, Avro tools, and MinIO. It emphasizes the importance of understanding these files for troubleshooting and highlights the process of inspecting snapshot files with Avro tools to better grasp how Iceberg manages data changes. Additionally, the blog discusses the use of the Hive metastore with Iceberg in Trino, illustrating the convenience of migrating from Hive to Iceberg tables due to existing support. The post underscores the significance of manifest lists and their role in managing Iceberg's persistent tree structure, which supports features like concurrency and time travel across data snapshots.