fix test failure
fix test failure

Summary: as subject

Test Plan: db_test

Reviewers: dhruba, MarkCallaghan

Reviewed By: MarkCallaghan

Differential Revision: https://reviews.facebook.net/D6309

NickCis/rocksdb,JackLian/rocksdb,geraldoandradee/rocksdb,msb-at-yahoo/rocksdb,facebook/rocksdb,Applied-Duality/rocksdb,vmx/rocksdb,kaschaeffer/rocksdb,Vaisman/rocksdb,lgscofield/rocksdb,caijieming-baidu/rocksdb,anagav/rocksdb,JoeWoo/rocksdb,norton/rocksdb,RyanTech/rocksdb,bbiao/rocksdb,jalexanderqed/rocksdb,ylong/rocksdb,IMCG/RcoksDB,temicai/rocksdb,vmx/rocksdb,IMCG/RcoksDB,JackLian/rocksdb,mbarbon/rocksdb,facebook/rocksdb,tizzybec/rocksdb,wat-ze-hex/rocksdb,tizzybec/rocksdb,geraldoandradee/rocksdb,makelivedotnet/rocksdb,makelivedotnet/rocksdb,ryneli/rocksdb,anagav/rocksdb,flabby/rocksdb,JackLian/rocksdb,Applied-Duality/rocksdb,jalexanderqed/rocksdb,facebook/rocksdb,wenduo/rocksdb,dkorolev/rocksdb,SunguckLee/RocksDB,JohnPJenkins/rocksdb,geraldoandradee/rocksdb,rDSN-Projects/rocksdb.replicated,Andymic/rocksdb,fengshao0907/rocksdb,tsheasha/rocksdb,biddyweb/rocksdb,Applied-Duality/rocksdb,zhangpng/rocksdb,siddhartharay007/rocksdb,hobinyoon/rocksdb,vmx/rocksdb,OverlordQ/rocksdb,luckywhu/rocksdb,JoeWoo/rocksdb,ryneli/rocksdb,tsheasha/rocksdb,hobinyoon/rocksdb,sorphi/rocksdb,NickCis/rocksdb,caijieming-baidu/rocksdb,JackLian/rocksdb,RyanTech/rocksdb,Andymic/rocksdb,OverlordQ/rocksdb,caijieming-baidu/rocksdb,Vaisman/rocksdb,tschottdorf/rocksdb,vashstorm/rocksdb,ylong/rocksdb,norton/rocksdb,SunguckLee/RocksDB,luckywhu/rocksdb,temicai/rocksdb,tschottdorf/rocksdb,Andymic/rocksdb,amyvmiwei/rocksdb,sorphi/rocksdb,skunkwerks/rocksdb,flabby/rocksdb,hobinyoon/rocksdb,dkorolev/rocksdb,Vaisman/rocksdb,OverlordQ/rocksdb,geraldoandradee/rocksdb,hobinyoon/rocksdb,facebook/rocksdb,JohnPJenkins/rocksdb,lgscofield/rocksdb,Vaisman/rocksdb,wskplho/rocksdb,sorphi/rocksdb,IMCG/RcoksDB,jalexanderqed/rocksdb,facebook/rocksdb,norton/rocksdb,bbiao/rocksdb,skunkwerks/rocksdb,vashstorm/rocksdb,wenduo/rocksdb,NickCis/rocksdb,vmx/rocksdb,tizzybec/rocksdb,sorphi/rocksdb,fengshao0907/rocksdb,zhangpng/rocksdb,virtdb/rocksdb,bbiao/rocksdb,flabby/rocksdb,skunkwerks/rocksdb,rDSN-Projects/rocksdb.replicated,virtdb/rocksdb,tsheasha/rocksdb,geraldoandradee/rocksdb,luckywhu/rocksdb,RyanTech/rocksdb,wlqGit/rocksdb,wskplho/rocksdb,norton/rocksdb,SunguckLee/RocksDB,siddhartharay007/rocksdb,ryneli/rocksdb,biddyweb/rocksdb,RyanTech/rocksdb,caijieming-baidu/rocksdb,fengshao0907/rocksdb,vashstorm/rocksdb,wlqGit/rocksdb,geraldoandradee/rocksdb,facebook/rocksdb,mbarbon/rocksdb,kaschaeffer/rocksdb,skunkwerks/rocksdb,virtdb/rocksdb,wlqGit/rocksdb,JackLian/rocksdb,hobinyoon/rocksdb,alihalabyah/rocksdb,fengshao0907/rocksdb,virtdb/rocksdb,fengshao0907/rocksdb,wskplho/rocksdb,skunkwerks/rocksdb,makelivedotnet/rocksdb,mbarbon/rocksdb,hobinyoon/rocksdb,wlqGit/rocksdb,JohnPJenkins/rocksdb,Applied-Duality/rocksdb,IMCG/RcoksDB,Andymic/rocksdb,wenduo/rocksdb,JohnPJenkins/rocksdb,rDSN-Projects/rocksdb.replicated,NickCis/rocksdb,dkorolev/rocksdb,bbiao/rocksdb,tschottdorf/rocksdb,zhangpng/rocksdb,Andymic/rocksdb,kaschaeffer/rocksdb,siddhartharay007/rocksdb,anagav/rocksdb,SunguckLee/RocksDB,flabby/rocksdb,msb-at-yahoo/rocksdb,ylong/rocksdb,tschottdorf/rocksdb,rDSN-Projects/rocksdb.replicated,Andymic/rocksdb,temicai/rocksdb,makelivedotnet/rocksdb,lgscofield/rocksdb,wskplho/rocksdb,makelivedotnet/rocksdb,wat-ze-hex/rocksdb,wenduo/rocksdb,lgscofield/rocksdb,lgscofield/rocksdb,tizzybec/rocksdb,temicai/rocksdb,temicai/rocksdb,alihalabyah/rocksdb,amyvmiwei/rocksdb,Andymic/rocksdb,wat-ze-hex/rocksdb,amyvmiwei/rocksdb,dkorolev/rocksdb,NickCis/rocksdb,msb-at-yahoo/rocksdb,anagav/rocksdb,jalexanderqed/rocksdb,makelivedotnet/rocksdb,dkorolev/rocksdb,tizzybec/rocksdb,vashstorm/rocksdb,wskplho/rocksdb,makelivedotnet/rocksdb,norton/rocksdb,Applied-Duality/rocksdb,IMCG/RcoksDB,tschottdorf/rocksdb,SunguckLee/RocksDB,amyvmiwei/rocksdb,hobinyoon/rocksdb,JackLian/rocksdb,siddhartharay007/rocksdb,wenduo/rocksdb,ylong/rocksdb,wat-ze-hex/rocksdb,alihalabyah/rocksdb,flabby/rocksdb,OverlordQ/rocksdb,norton/rocksdb,JohnPJenkins/rocksdb,hobinyoon/rocksdb,caijieming-baidu/rocksdb,flabby/rocksdb,rDSN-Projects/rocksdb.replicated,bbiao/rocksdb,Vaisman/rocksdb,ryneli/rocksdb,jalexanderqed/rocksdb,fengshao0907/rocksdb,biddyweb/rocksdb,virtdb/rocksdb,rDSN-Projects/rocksdb.replicated,caijieming-baidu/rocksdb,ryneli/rocksdb,virtdb/rocksdb,tsheasha/rocksdb,JoeWoo/rocksdb,vashstorm/rocksdb,anagav/rocksdb,zhangpng/rocksdb,Applied-Duality/rocksdb,kaschaeffer/rocksdb,vashstorm/rocksdb,OverlordQ/rocksdb,tsheasha/rocksdb,temicai/rocksdb,JackLian/rocksdb,jalexanderqed/rocksdb,biddyweb/rocksdb,tschottdorf/rocksdb,zhangpng/rocksdb,rDSN-Projects/rocksdb.replicated,msb-at-yahoo/rocksdb,vmx/rocksdb,sorphi/rocksdb,amyvmiwei/rocksdb,SunguckLee/RocksDB,tizzybec/rocksdb,dkorolev/rocksdb,JohnPJenkins/rocksdb,OverlordQ/rocksdb,wat-ze-hex/rocksdb,alihalabyah/rocksdb,skunkwerks/rocksdb,siddhartharay007/rocksdb,IMCG/RcoksDB,mbarbon/rocksdb,wat-ze-hex/rocksdb,ylong/rocksdb,wenduo/rocksdb,IMCG/RcoksDB,kaschaeffer/rocksdb,ryneli/rocksdb,JoeWoo/rocksdb,vmx/rocksdb,RyanTech/rocksdb,kaschaeffer/rocksdb,wenduo/rocksdb,msb-at-yahoo/rocksdb,zhangpng/rocksdb,sorphi/rocksdb,NickCis/rocksdb,anagav/rocksdb,jalexanderqed/rocksdb,vmx/rocksdb,ryneli/rocksdb,alihalabyah/rocksdb,Vaisman/rocksdb,wlqGit/rocksdb,mbarbon/rocksdb,alihalabyah/rocksdb,temicai/rocksdb,biddyweb/rocksdb,Andymic/rocksdb,wlqGit/rocksdb,geraldoandradee/rocksdb,dkorolev/rocksdb,bbiao/rocksdb,ylong/rocksdb,OverlordQ/rocksdb,biddyweb/rocksdb,JohnPJenkins/rocksdb,msb-at-yahoo/rocksdb,bbiao/rocksdb,skunkwerks/rocksdb,wat-ze-hex/rocksdb,RyanTech/rocksdb,virtdb/rocksdb,SunguckLee/RocksDB,norton/rocksdb,alihalabyah/rocksdb,biddyweb/rocksdb,wskplho/rocksdb,siddhartharay007/rocksdb,wskplho/rocksdb,luckywhu/rocksdb,caijieming-baidu/rocksdb,tsheasha/rocksdb,tsheasha/rocksdb,flabby/rocksdb,sorphi/rocksdb,tsheasha/rocksdb,siddhartharay007/rocksdb,luckywhu/rocksdb,JoeWoo/rocksdb,SunguckLee/RocksDB,kaschaeffer/rocksdb,vashstorm/rocksdb,RyanTech/rocksdb,NickCis/rocksdb,bbiao/rocksdb,norton/rocksdb,lgscofield/rocksdb,tizzybec/rocksdb,facebook/rocksdb,lgscofield/rocksdb,amyvmiwei/rocksdb,luckywhu/rocksdb,ylong/rocksdb,mbarbon/rocksdb,fengshao0907/rocksdb,luckywhu/rocksdb,anagav/rocksdb,wenduo/rocksdb,amyvmiwei/rocksdb,mbarbon/rocksdb,Applied-Duality/rocksdb,vmx/rocksdb,JoeWoo/rocksdb,JoeWoo/rocksdb,zhangpng/rocksdb,Vaisman/rocksdb,wat-ze-hex/rocksdb,wlqGit/rocksdb,facebook/rocksdb