Integrate scan optimizer into BwTree
Integrate scan optimizer into BwTree

cmu-db/peloton,vittvolt/15721-peloton,AngLi-Leon/peloton,malin1993ml/peloton,PauloAmora/peloton,jessesleeping/iso_peloton,AngLi-Leon/peloton,wangziqi2016/peloton,AngLi-Leon/peloton,yingjunwu/peloton,vittvolt/peloton,wangziqi2016/peloton,cmu-db/peloton,phisiart/peloton-p3,eric-haibin-lin/peloton-1,seojungmin/peloton,apavlo/peloton,jessesleeping/iso_peloton,malin1993ml/peloton,prashasthip/peloton,apavlo/peloton,PauloAmora/peloton,phisiart/peloton-p3,yingjunwu/peloton,AllisonWang/peloton,jessesleeping/iso_peloton,apavlo/peloton,AllisonWang/peloton,malin1993ml/peloton,prashasthip/peloton,phisiart/peloton-p3,seojungmin/peloton,apavlo/peloton,yingjunwu/peloton,PauloAmora/peloton,ShuxinLin/peloton,cmu-db/peloton,malin1993ml/peloton,PauloAmora/peloton,jessesleeping/iso_peloton,eric-haibin-lin/peloton-1,wangziqi2016/peloton,vittvolt/15721-peloton,AllisonWang/peloton,eric-haibin-lin/peloton-1,apavlo/peloton,AllisonWang/peloton,vittvolt/15721-peloton,prashasthip/peloton,cmu-db/peloton,seojungmin/peloton,seojungmin/peloton,wangziqi2016/peloton,vittvolt/peloton,ShuxinLin/peloton,PauloAmora/peloton,wangziqi2016/peloton,haojin2/peloton,AngLi-Leon/peloton,cmu-db/peloton,haojin2/peloton,vittvolt/15721-peloton,vittvolt/peloton,malin1993ml/peloton,AllisonWang/peloton,malin1993ml/peloton,phisiart/peloton-p3,jessesleeping/iso_peloton,cmu-db/peloton,prashasthip/peloton,vittvolt/peloton,haojin2/peloton,AngLi-Leon/peloton,AngLi-Leon/peloton,prashasthip/peloton,ShuxinLin/peloton,jessesleeping/iso_peloton,vittvolt/peloton,AllisonWang/peloton,eric-haibin-lin/peloton-1,haojin2/peloton,haojin2/peloton,eric-haibin-lin/peloton-1,vittvolt/15721-peloton,yingjunwu/peloton,yingjunwu/peloton,wangziqi2016/peloton,seojungmin/peloton,apavlo/peloton,prashasthip/peloton,haojin2/peloton,eric-haibin-lin/peloton-1,phisiart/peloton-p3,seojungmin/peloton,vittvolt/peloton,vittvolt/15721-peloton,phisiart/peloton-p3,ShuxinLin/peloton,yingjunwu/peloton,ShuxinLin/peloton,jessesleeping/iso_peloton,PauloAmora/peloton,ShuxinLin/peloton