}
// offline line index is not moving, so MMAP should be the most efficient.
DirectoryManager dirMgr = new DefaultDirectoryManager(dest, DIRECTORY_MODE.MMAP);
Zoie<R, D> zoie = new ZoieSystem(dirMgr, _interpreter, _decorator, _zoieConfig);
if (_running) zoie.start();
if (_zoieOne != null) {
final Zoie toBeShutdown = _zoieOne;
_zoieOne = zoie;