https://cdelmonte.dev/tags/compilers/ Recent content in Compilers on cdelmonte.dev Hugo -- 0.147.7 en-us Sun, 26 Apr 2026 00:00:00 +0000 https://cdelmonte.dev/deep-dives/the-hidden-dsl-in-catalyst/ Sun, 26 Apr 2026 00:00:00 +0000 https://cdelmonte.dev/deep-dives/the-hidden-dsl-in-catalyst/ How Spark’s internal rewriting framework — Catalyst — exposes an embedded DSL with a public extension surface, the same one Delta Lake and Iceberg use to plug into the optimizer pipeline.