BTreeMap: compaction, work start, see #97 and #545
BTreeMap: compaction, work start, see #97 and #545

SleimanJneidi/mapdb,pettermahlen/mapdb,jankotek/MapDB,jankotek/MapDB,jankotek/mapdb,lamfire/mapdb,binarytemple/mapdb,codeaudit/mapdb,jankotek/mapdb