add rollback test
add rollback test

seojungmin/peloton,vittvolt/peloton,vittvolt/peloton,cmu-db/peloton,haojin2/peloton,malin1993ml/peloton,AngLi-Leon/peloton,seojungmin/peloton,haojin2/peloton,AngLi-Leon/peloton,AngLi-Leon/peloton,PauloAmora/peloton,PauloAmora/peloton,vittvolt/peloton,seojungmin/peloton,cmu-db/peloton,apavlo/peloton,haojin2/peloton,prashasthip/peloton,malin1993ml/peloton,apavlo/peloton,prashasthip/peloton,seojungmin/peloton,ShuxinLin/peloton,AllisonWang/peloton,AllisonWang/peloton,apavlo/peloton,malin1993ml/peloton,ShuxinLin/peloton,haojin2/peloton,PauloAmora/peloton,prashasthip/peloton,apavlo/peloton,apavlo/peloton,AngLi-Leon/peloton,prashasthip/peloton,AllisonWang/peloton,AllisonWang/peloton,yingjunwu/peloton,apavlo/peloton,haojin2/peloton,ShuxinLin/peloton,cmu-db/peloton,malin1993ml/peloton,cmu-db/peloton,ShuxinLin/peloton,AngLi-Leon/peloton,yingjunwu/peloton,vittvolt/peloton,PauloAmora/peloton,yingjunwu/peloton,malin1993ml/peloton,prashasthip/peloton,ShuxinLin/peloton,cmu-db/peloton,PauloAmora/peloton,AngLi-Leon/peloton,malin1993ml/peloton,PauloAmora/peloton,yingjunwu/peloton,AllisonWang/peloton,yingjunwu/peloton,seojungmin/peloton,haojin2/peloton,AllisonWang/peloton,prashasthip/peloton,ShuxinLin/peloton,seojungmin/peloton,vittvolt/peloton,cmu-db/peloton,vittvolt/peloton,yingjunwu/peloton