logstash 中 add_field 参数指定 tag

add_field => {
          "my_field_one" => "one"
}

{
           "公司名称" => "xxx",
           "BUG_ID" => 1234,
           "VIP_Level" => "核心VIP",
           "my_field_one" => "one",
}

 add_field => {
          "[其它][tag1]" => "one"
          "[其它][tag2]" => "two"
}

{
           "公司名称" => "xxx",
           "BUG_ID" => 1234,
           "VIP_Level" => "核心VIP",
           "其它" => {
                   "tag1" => "one",
                   "tag2" => "two"
          }
}

add_field => {
#方法一：
          "其它" => { "tag1" => "one",
                      "tag2" => "two"
                    }

#方法二：和logstash中一贯用法一样，不加逗号
          "其它2" => { "tag1" => "one"
                       "tag2" => "two"
                    }

#方法三：写在一行上
          "其它2" => {"tag1" => "one", "tag2" => "two" }
}

#方法四：先执行 add_tag 再执行 add_field。这样为嘛会是数组？？？
add_tag => "其它"
add_field = {
       "其它" => { 
              "tag1" => "one"
              "tag2" => "two"
       }
}