Working with snapshots in parallel implemented

Change-Id: I7e375847aef441286ee281e57812bcd319222646
syncing time on nodes implemented

Change-Id: I35b6e2d27194aa3685b8561a2946fb936f1e5ed0
Working with snapshots in parallel removed

Change-Id: Ifd7aa6f0cc53ff98cd3584e45473d47337655ec9