Some problem with chef search

gistfile1.rb

run_date = Time.now

ruby_block "add current date" do
  block do 
    node[:test_last_chef_run] = run_date.to_i
    node.save
  end
  action :create
end

ruby_block "search for matching nodes ..." do
  block do
    nodes = search(:node,"test_last_chef_run:#{run_date.to_i}")
    Chef::Log.info "Found #{nodes.size} nodes : #{nodes.to_s} "
  end
  action :create
end

the nodes array in the second block always comes empty - this problem prevents the mongodb cookbook to find a member of a replicaset it has just configured (at bootstrap time - when the node isn't registered yet).

Is there a way to make sure the node is in the index before calling :search ?

should i force the current node in the search results instead ?