The following bug has been logged on the website:
Bug reference: 14829
Logged by: bucoo hsiao
Email address: bucoo(at)sohu(dot)com
PostgreSQL version: 10beta4
Operating system: all
Description:
join path's rows from outer path and final_cost_xxxjoin it
div(get_parallel_divisor) again, when outer path is GatherPath is rows div
twice