Volume: optimize some methods in RAF and MMAP files
Volume: optimize some methods in RAF and MMAP files

jankotek/mapdb,binarytemple/mapdb,jankotek/MapDB,morfeo8marc/mapdb,ffjiao/mapdb,jankotek/mapdb,codeaudit/mapdb,SleimanJneidi/mapdb,pettermahlen/mapdb,cocosli/mapdb,hangum/mapdb,sumit784/mapdb,lamfire/mapdb,jankotek/MapDB