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2016-01-20 10:37:55 -0500 asked a question ERROR: scale() got an unexpected keyword argument 'resize_node_groups'

Hello, everyone,

I'm trying to scale hadoop cluster with sahara cluster-scale command.

sahara cluster-scale --id 65886aeb-28f5-4af7-bff8-e2ee91af6a9b --json resize-cluster.json 
...
ERROR: scale() got an unexpected keyword argument 'resize_node_groups'

Here is the content of my json file resize-cluster.json:

{
    "resize_node_groups": [
        {
            "count": 1,
            "name": "vanilla-worker-tpl"
        }
    ],
    "add_node_groups": [
    ]
}

Could anyone tell me what am I doing wrong? Thanks in advance