message: Null nodes initialization to enable launcher issues debugging.
diff: @@ -1195,6 +1195,7 @@ class Cluster(object):
  Utils.Print("ERROR: Launcher failed to launch.")
  return False
  + self.nodes=range(total_nodes) # placeholder for cleanup purposes only
  nodes=self.discoverLocalNodes(total_nodes)
  if total_nodes != len(nodes):
  