project
Apache Polaris is an open-source, Apache Iceberg-compatible REST catalog for managing table metadata, access control, and governance across engines.
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Rust's Iceberg REST client ran up to 4.29x faster than pyiceberg on a local catalog, with 85% to 90% of the gap in Python's HTTP library. pyiceberg covers 21 of 25 tested endpoints to Rust's 13, so coverage settles the choice before speed does.
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Apache Iceberg's Rust REST client, iceberg-catalog-rest 0.10.1, implements 13 of 25 tested catalog operations and logs in to five of seven catalogs. The two it cannot log in to are AWS Glue and S3 Tables, and reaching them from Rust means a different crate with a different operation set.
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Reviewers logged 10,991 passing tests on Iceberg's first 1.12.0 candidate before rejecting it over two vendored web files. The change most likely to break a downstream build is a removed partition-statistics helper.
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Keeping the Iceberg table format governance-unaware was a deliberate call. That leaves the catalog as the only thing standing on the path of every read. A dev.to guide lists six pieces an operator has to source above it.
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A read-only MCP server with four Iceberg tools ran against six live catalogs off a single environment variable. Three of the tools worked on pyiceberg alone, and the fourth needed a storage package for the object store.
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A step-by-step build of the same Apache Iceberg data agent on Google ADK, AWS Strands and Microsoft Agent Framework measures what a cloud move costs in code, in latency and in storage wiring.
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Lock-in migrated from the model to the runtime that holds your tool grants, approval rules and learned state. Six specifications aim to make that runtime's contents portable, and half of them are one person's drafts.
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Two decisions made on public mailing lists this week change what a safe lakehouse upgrade plan looks like. Streaming writers and anyone queued behind Parquet 1.18.0 need to re-read their notes.
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