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https://jack-vanlightly.com/analyses/2024/4/24/understanding-apache-hudi-consistency-model-part-2 Understanding Apache Hudi's Consistency Model Part 2 — Jack Vanlightly Apr 24, 2024 - In part 1 we built up an understanding of the mechanics of Hudi Copy-on-write tables, with a special regard to multi-writer scenarios, using a simplified... model part 2 apache hudi jack vanlightly understanding consistency https://jack-vanlightly.com/blog/2025/10/8/beyond-indexes-how-open-table-formats-optimize-query-performance Beyond Indexes: How Open Table Formats Optimize Query Performance — Jack Vanlightly Oct 8, 2025 - My career in data started as a SQL Server performance specialist, which meant I was deep into the nuances of indexes, locking and blocking, execution plan... open table formats query performance jack vanlightly beyond indexes https://jack-vanlightly.com/blog/2025/12/10/the-three-durable-function-forms The Three Durable Function Forms — Jack Vanlightly Dec 10, 2025 - Durable execution engines (DEEs) talk about “workflows”, “activities”, “virtual objects”, “handlers”, and “functions”, but they’re often describing the same... jack vanlightly three durable function forms https://jack-vanlightly.com/blog/category/Data Jack Vanlightly { dist sys, formal verification, event streaming } jack vanlightly https://jack-vanlightly.com/blog/2025/6/11/coordinated-progress-part-3-coupling-synchrony-and-complexity Coordinated Progress – Part 3 – Coupling, Synchrony and Complexity — Jack Vanlightly Jun 11, 2025 - In part 2, we built a mental framework using a graph of nodes and edges to represent distributed work. Workflows are subgraphs coordinated via choreography or... part 3 jack vanlightly coordinated progress coupling https://jack-vanlightly.com/blog/2025/11/19/have-your-iceberg-cubed-not-sorted-meet-qbeast-the-otree-spatial-index Have your Iceberg Cubed, Not Sorted: Meet Qbeast, the OTree Spatial Index — Jack Vanlightly Nov 19, 2025 - In today’s post I want to walk through a fascinating indexing technique for data lakehouses which flips the role of the index in open table formats like Apache... jack vanlightly iceberg cubed sorted meet https://jack-vanlightly.com/blog/2025/10/22/a-fork-in-the-road-deciding-kafkas-diskless-future A Fork in the Road: Deciding Kafka’s Diskless Future — Jack Vanlightly Oct 24, 2025 - “ The Kafka community is currently seeing an unprecedented situation with three KIPs ( KIP-1150 , KIP-1176 , KIP-1183) simultaneously addressing the same... jack vanlightly fork road deciding diskless https://jack-vanlightly.com/ Jack Vanlightly { dist sys, formal verification, event streaming } jack vanlightly https://jack-vanlightly.com/blog/2025/12/4/the-durable-function-tree-part-1 The Durable Function Tree - Part 1 — Jack Vanlightly Dec 10, 2025 - In my last post I wrote a bout why and where determinism is needed in durable execution (DE). In this post I'm going to explore how workflows can be formed... tree part 1 jack vanlightly durable function