TLDR Tech / Practical
Apache Iceberg 1.12.0 Upgrade Guide
Apache Iceberg version 1.12.0 introduces significant enhancements, including support for variant shredding, geospatial data types, Hilbert-curve clustering, and Flink tasks that convert equality deletes into deletion vectors. This update drops support for Spark 3.4 and Flink 2.0, changes the default AWS HTTP client to Apache HttpClient 5, and updates several key dependencies. Platform engineers must carefully manage these backward-incompatible changes across their engines and catalogs before migrating production environments.
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