Ryan Marcus(@RyanMarcus):Our group is part of two @VLDBconf papers on query opt. and execution: 1) Ultron, a system for building history-based optimization rules, deployed at @databricks 2) Global hash tables strike back!(?), an experimental analysis of fully concurrent group by aggregation. ⬇️

Ryan Marcus

@RyanMarcus

Assistant prof @CIS_Penn. Machine learning for systems, databases. Also

参加 March 2009

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Ryan Marcus@RyanMarcus

2026.08.28 20:36

Our group is part of two @VLDBconf papers on query opt. and execution: 1) Ultron, a system for building history-based optimization rules, deployed at @databricks 2) Global hash tables strike back!(?), an experimental analysis of fully concurrent group by aggregation. ⬇️