https://yaooqinn.github.io/tags/catalyst/ Recent content in Catalyst on Kent Yao Hugo -- 0.157.0 en-us Tue, 26 May 2026 00:00:00 +0000 https://yaooqinn.github.io/posts/spark/branch-flip-analysis-from-postgres-to-spark/ Tue, 26 May 2026 00:00:00 +0000 https://yaooqinn.github.io/posts/spark/branch-flip-analysis-from-postgres-to-spark/ An ETH paper finds 21 previously unknown performance bugs in PostgreSQL, MySQL, CockroachDB and MariaDB by flipping optimization branches on and off. The technique is conceptually simple, the surface in Spark is unusually inviting, and the open-source engine community already ships one of the building blocks.