var user = {};
user.first_name = "John updated"
db.update({
            index: config.index_name,
            type: 'user',
            id: req.body.user_id,
            body: {
                doc: user
            }
        }, function (err, resp) {
            if (err) {
                return next(err);
            }
             db.search({
                index: config.index_name,
                type: 'user',
                body:  {
                    "query": {
                        "match": {
                            "_id": req.body.user_id
                        }
                    }
                }
            }, function (err, resp) {
                if (err) {
                    return next(err);
                }
                var data = {};
                    data.creator_name = resp.hits.hits[0]._source.first_name
                    // Here am not getting update first name "John updated" instead of getting John
            });
});