Fix concurrent map access. Issue #612
Fix concurrent map access. Issue #612

popldo/fabric,gromeroar/fabric,adecaro/fabric,murali-katipalli-dtcc/fabric,angrbrd/fabric,gongsu832/obc-peer,ahuachen/fabric,rameshthoomu/obc-peer,noamher/obc-peer,adecaro/fabric,jjjjibm/fabric,bburgdave/fabric,bburgdave/fabric,angrbrd/fabric,ariccy/fabric,bren3582/fabric,itp4IBM/fabric,ghaskins/obc-peer,ariccy/fabric,gennadylaventman/fabric,bren3582/fabric,rameshthoomu/obc-peer,isghe/obc-peer,gongsu832/obc-peer,ariccy/fabric,gennadylaventman/fabric,gennadylaventman/fabric,gongsu832/obc-peer,gennadylaventman/fabric,ariccy/fabric,rameshthoomu/obc-peer,itp4IBM/fabric,jjjjibm/fabric,andresgaragiola/fabric,srderson/fabric,tuand27613/fabric,angrbrd/fabric,tuand27613/obc-peer,srderson/fabric,hyperledger-archives/fabric,JonathanLevi/fabric,tuand27613/obc-peer,hyperledger-archives/fabric,itp4IBM/fabric,adecaro/fabric,JonathanLevi/fabric,sumanair/obc-peer,srderson/fabric,openblockchain/obc-peer,bren3582/fabric,tuand27613/fabric,itp4IBM/fabric,tuand27613/fabric,gongsu832/fabric,JonathanLevi/fabric,hyperledger-archives/fabric,popldo/fabric,binhn/obc-peer,tuand27613/fabric,andresgaragiola/fabric,ahuachen/fabric,jjjjibm/fabric,bburgdave/fabric,murali-katipalli-dtcc/fabric,JonathanLevi/fabric,srderson/fabric,murali-katipalli-dtcc/fabric,srderson/fabric,isghe/obc-peer,adecaro/fabric,andresgaragiola/fabric,ariccy/fabric,angrbrd/fabric,openblockchain/obc-peer,gennadylaventman/fabric,srderson/fabric,tuand27613/fabric,gromeroar/fabric,andresgaragiola/fabric,angrbrd/fabric,jjjjibm/fabric,gennadylaventman/fabric,isghe/obc-peer,hyperledger-archives/fabric,bburgdave/fabric,gongsu832/fabric,gromeroar/fabric,angrbrd/fabric,ariccy/fabric,andresgaragiola/fabric,hyperledger-archives/fabric,popldo/fabric,ahuachen/fabric,itp4IBM/fabric,popldo/fabric,gromeroar/fabric,noamher/obc-peer,ahuachen/fabric,ghaskins/obc-peer,tuand27613/obc-peer,tuand27613/fabric,bren3582/fabric,JonathanLevi/fabric,ahuachen/fabric,ariccy/fabric,sumanair/obc-peer,murali-katipalli-dtcc/fabric,jjjjibm/fabric,tuand27613/fabric,adecaro/fabric,gongsu832/fabric,sumanair/obc-peer,murali-katipalli-dtcc/fabric,isghe/obc-peer,murali-katipalli-dtcc/fabric,JonathanLevi/fabric,gennadylaventman/fabric,itp4IBM/fabric,itp4IBM/fabric,gongsu832/fabric,andresgaragiola/fabric,hyperledger-archives/fabric,gromeroar/fabric,popldo/fabric,binhn/obc-peer,noamher/obc-peer,ahuachen/fabric,ahuachen/fabric,bren3582/fabric,bburgdave/fabric,bren3582/fabric,gromeroar/fabric,isghe/obc-peer,ghaskins/obc-peer,adecaro/fabric,bren3582/fabric,JonathanLevi/fabric,adecaro/fabric,binhn/obc-peer,hyperledger-archives/fabric,popldo/fabric,popldo/fabric,ghaskins/obc-peer,jjjjibm/fabric,angrbrd/fabric,openblockchain/obc-peer,murali-katipalli-dtcc/fabric,jjjjibm/fabric,andresgaragiola/fabric,srderson/fabric,gromeroar/fabric