“Local vs. Global Optimization: Operator Placement Strategies in Heterogeneous Environments” (2015)
DBLP : https://dblp.org/rec/html/conf/edbt/Karnagel15
Summary: In this paper, authors explained how they have implemented local and global optimizations strategies in column store database systems to tackle the problem of operator placement in heterogeneous systems. And they came to the conclusion that global optimization finds better plans and reliable to find good operator placement as compare with local optimizations.