I tried to use GPDB code generator, but no improvement. Here is the detail:
Step1: set parameter to enable codegen
Step2: I run the testcase(TPC-H Query 1) posted on http://engineering.pivotal.io/post/codegen-gpdb-qx/. From the debug log, the code generator was executed successfully. But the performance is not improved at all.
Did I missed something? Could you please help give some suggestion?
Thank you so much.