Setting master and data node after upgrate to 2.0

[magnusbaeck (Magnus Bäck)]

Perhaps this recent thread is helpful:

Dedicated master nodes in Elasticsearch 2.0

Prior to elasticsearch 2.0, you have to specify node.data = false and node.master = true to set dedicated master nodes. (Refer to this documentation) However, based on this documentation, node.master setting is no longer available. Only node.data still exists. How do set dedicated master nodes in Elasticsearch 2.0? Thank you.