Can`t use _river to pulling data and index data into Cluster on Ubuntu

Dear all
i going to build frontend for monitor data ,i chose elasticsearch-head ,when i try to test by pulling data from mysql db user _river . i read guide from
1/ https://github.com/jprante/elasticsearch-river-jdbc/wiki/Quickstart
2/https://gist.github.com/wingdspur/2026107 (elasticsearch run as service on Ubuntu)

but resust in elasticsearch without data index??????????????? ,i checked,db source ok,plugins _river,mysql_java_connec... ok too ,i don`t no why?
{

took: 1
timed_out: false
_shards: {
    total: 1
    successful: 1
    failed: 0
}
hits: {
    total: 1
    max_score: 1
    hits: [
        {
            _index: _river
            _type: my_jdbc_river
            _id: _meta
            _score: 1
            _source: {
                type: jdbc
                jdbc: {
                    driver: com.mysql.jdbc.Driver
                    url: jdbc:mysql://localhost:3306/gate
                    user: root
                    password: root
                    sql: select * from news 
                }
                index: {
                    index: news
                    type: news
                }
            }
        }
    ]
}

}