[REFACTOR][BOYC] Non recursive partitioning#5493

Merged

masahi merged 5 commits intoapache:masterfrom zhiics:non-recursive-partition

May 1, 2020

+115-278

Commits on Apr 30, 2020

non recursive partitioning
zhiics
committed
refactor maps

comaniac
authored and
zhiics
committed
rebase upstream
zhiics
committed
refactor shared output
comaniac
committed

Commits on May 1, 2020

address comments
comaniac
committed