According to Section 22.214.171.124.ii of AG (Page. 157)
We have a built in placement set selection algorithm within pools
My question is : Can scheduler take over this and use user defined rules,
say look in to set 2 unconditionally prior to set 1 regardless of static or dynamic ncpus or mem
btw, node_sort_key would work within placement set(as long as it was chosen) , but not work while choosing placement set.