Hi Team, Sharing 2 research articles: 1. Drill Workshop -- Control Query Parallelization <http://www.openkb.info/2015/05/drill-workshop-control-query.html>
This article explains the meaning of planner.slice_target, planner.width.max_per_node, planner.width.max_per_query by examples, and show how to control the basic query parallelization. 2. Drill Workshop -- Understanding Joins <http://www.openkb.info/2015/05/drill-workshop-understanding-joins.html> This article digs into broadcast&distributed joins, explains the meaning of planner.broadcast_factor,planner.broadcast_threshold per Drill source code, and also show you how to control the parallelism of each join type. Thanks, Hao
