Omer Arap · Pivotal Engineering Journal

Omer Arap

@oarap

Posts By Omer Arap

Oct 12, 2016
Profiling Query Compilation Time with GPORCA GPORCA is Pivotal’s Query Optimizer for Greenplum Database and Apache HAWQ (incubating). In this post, we describe how users can profile query compilation with GPORCA. This will aid users in understanding which of GPORCA’s steps is the most resource intensive, and what transformations are being triggered. Based on this information, users can provide query hints to reduce or increase the search space, see where the time and memory is being spent, and learn how to influence its decision making. Categories: Databases GPDB HAWQ PQO GPORCA Query Optimization SQL