split 拆分事件

    2.     "@timestamp": "2014-11-18T08:11:33.000Z",
    3.     "host": "web121.mweibo.tc.sinanode.com",
    5. }
    6.     "@version": "1",
    8.     "host": "web121.mweibo.tc.sinanode.com",
    9.     "message": "test2"