RM: bug fix, only need to check replica in scheduler
RM: bug fix, only need to check replica in scheduler

baidu/galaxy,Kai-Zhang/galaxy,Kai-Zhang/galaxy,taotaowill/galaxy,baidu/galaxy,taotaowill/galaxy,taotaowill/galaxy,May2016/galaxy,baidu/galaxy,May2016/galaxy,Kai-Zhang/galaxy,May2016/galaxy