infoByKey = new HashMap<ChunkKey, ChunkInfo>();
dirtyMeta = new HashMap<ChunkKey, ChunkMeta>();
chunkMeta = new HashMap<ChunkKey, ChunkMeta>();
chunkEdges = new HashMap<ChunkKey, Edges>();
treeParser = new CanonicalTreeParser();
idBuffer = new MutableObjectId();
objectMap = new ObjectIdSubclassMap<DhtInfo>();
final int max = options.getParserCacheSize();
chunkReadBackCache = new LinkedHashMap<ChunkKey, PackChunk>(max, 0.75f, true) {
private static final long serialVersionUID = 1L;