make transaction test more robust
make transaction test more robust

apavlo/peloton,apavlo/peloton,cmu-db/peloton,vittvolt/peloton,malin1993ml/peloton,malin1993ml/peloton,cmu-db/peloton,yingjunwu/peloton,PauloAmora/peloton,vittvolt/peloton,yingjunwu/peloton,yingjunwu/peloton,PauloAmora/peloton,yingjunwu/peloton,vittvolt/peloton,vittvolt/peloton,apavlo/peloton,malin1993ml/peloton,malin1993ml/peloton,cmu-db/peloton,malin1993ml/peloton,PauloAmora/peloton,yingjunwu/peloton,PauloAmora/peloton,apavlo/peloton,apavlo/peloton,vittvolt/peloton,malin1993ml/peloton,cmu-db/peloton,yingjunwu/peloton,PauloAmora/peloton,vittvolt/peloton,apavlo/peloton,cmu-db/peloton,cmu-db/peloton,PauloAmora/peloton