{
    "type": "record",
    "name": "Campaign",
    "separatorChar": "\t",
    "fields": [
        {
            "name": "campaign_id",
            "type": "string",
            "doc": "campaign id, from mysql primary key"
        },
        {
            "name": "app_name",
            "type": "string",
            "doc": "app name"
        },
        {
            "name": "platform",
            "type": "string",
            "doc": "ios or adr"
        },
        {
            "name": "package_name",
            "type": "string",
            "doc": "package name"
        },
        {
            "name": "category",
            "type": "string",
            "doc": "category"
        },
        {
            "name": "sub_category",
            "type": "string",
            "doc": "sub mvFirstCategory"
        },
        {
            "name": "status",
            "type": "int",
            "doc": "the same meaning as in mysql"
        },
        {
            "name": "update_time",
            "type": "string",
            "doc": "更新时间"
        }
    ]
}