allow 0us flush time in ycsb
allow 0us flush time in ycsb

larryxiao/peloton,ranxian/peloton,amaliujia/CMUDB-peloton,amaliujia/CMUDB-peloton,larryxiao/peloton,amaliujia/CMUDB-peloton,amaliujia/CMUDB-peloton,ranxian/peloton,amaliujia/CMUDB-peloton,larryxiao/peloton,amaliujia/CMUDB-peloton,larryxiao/peloton,ranxian/peloton,ranxian/peloton,ranxian/peloton,larryxiao/peloton,ranxian/peloton,larryxiao/peloton,amaliujia/CMUDB-peloton,larryxiao/peloton