*** a/contrib/postgres_fdw/postgres_fdw.c
--- b/contrib/postgres_fdw/postgres_fdw.c
***************
*** 2625,2631 **** estimate_path_cost_size(PlannerInfo *root,
  		 * bare scan each time. Instead, use the costs if we have cached them
  		 * already.
  		 */
! 		if (fpinfo->rel_startup_cost > 0 && fpinfo->rel_total_cost > 0)
  		{
  			startup_cost = fpinfo->rel_startup_cost;
  			run_cost = fpinfo->rel_total_cost - fpinfo->rel_startup_cost;
--- 2625,2631 ----
  		 * bare scan each time. Instead, use the costs if we have cached them
  		 * already.
  		 */
! 		if (fpinfo->rel_startup_cost >= 0 && fpinfo->rel_total_cost >= 0)
  		{
  			startup_cost = fpinfo->rel_startup_cost;
  			run_cost = fpinfo->rel_total_cost - fpinfo->rel_startup_cost;