IgniteInternalFuture<?> formatAsync(){
  GridFutureAdapter<?> fut=new GridFutureAdapter<>();
  Thread t=new Thread(new FormatRunnable(fut),"igfs-format-" + cfg.getName() + "-"+ FORMAT_THREAD_IDX_GEN.incrementAndGet());
  t.setDaemon(true);
  t.start();
  return fut;
}

IgniteInternalFuture < ? > formatAsync ( ) { GridFutureAdapter < ? > fut = new GridFutureAdapter < > ( ) ; Thread t = new Thread ( new FormatRunnable ( fut ) , "igfs-format-" + cfg . getName ( ) + "-" + FORMAT_THREAD_IDX_GEN . incrementAndGet ( ) ) ; t . setDaemon ( true ) ; t . start ( ) ; return fut ; }
formats the file system removing all existing entries from it .
