clean up gc logic
clean up gc logic

AngLi-Leon/peloton,apavlo/peloton,PauloAmora/peloton,prashasthip/peloton,vittvolt/peloton,vittvolt/15721-peloton,prashasthip/peloton,ShuxinLin/peloton,phisiart/peloton-p3,phisiart/peloton-p3,malin1993ml/peloton,yingjunwu/peloton,PauloAmora/peloton,ShuxinLin/peloton,vittvolt/15721-peloton,wangziqi2016/peloton,phisiart/peloton-p3,AllisonWang/peloton,seojungmin/peloton,seojungmin/peloton,PauloAmora/peloton,seojungmin/peloton,phisiart/peloton-p3,AllisonWang/peloton,wangziqi2016/peloton,haojin2/peloton,prashasthip/peloton,AllisonWang/peloton,ShuxinLin/peloton,yingjunwu/peloton,vittvolt/peloton,malin1993ml/peloton,prashasthip/peloton,yingjunwu/peloton,seojungmin/peloton,vittvolt/15721-peloton,AllisonWang/peloton,AllisonWang/peloton,yingjunwu/peloton,AngLi-Leon/peloton,vittvolt/15721-peloton,phisiart/peloton-p3,PauloAmora/peloton,apavlo/peloton,yingjunwu/peloton,AngLi-Leon/peloton,prashasthip/peloton,wangziqi2016/peloton,vittvolt/peloton,phisiart/peloton-p3,vittvolt/15721-peloton,apavlo/peloton,cmu-db/peloton,cmu-db/peloton,AllisonWang/peloton,cmu-db/peloton,haojin2/peloton,AngLi-Leon/peloton,apavlo/peloton,PauloAmora/peloton,malin1993ml/peloton,ShuxinLin/peloton,wangziqi2016/peloton,prashasthip/peloton,yingjunwu/peloton,AngLi-Leon/peloton,ShuxinLin/peloton,ShuxinLin/peloton,vittvolt/peloton,vittvolt/peloton,haojin2/peloton,haojin2/peloton,AngLi-Leon/peloton,vittvolt/peloton,haojin2/peloton,malin1993ml/peloton,cmu-db/peloton,seojungmin/peloton,cmu-db/peloton,seojungmin/peloton,apavlo/peloton,malin1993ml/peloton,wangziqi2016/peloton,vittvolt/15721-peloton,malin1993ml/peloton,cmu-db/peloton,apavlo/peloton,wangziqi2016/peloton,PauloAmora/peloton,haojin2/peloton