elasticsearch亲子关系

Question

试图弄清楚使用弹性版本6.0实现父子关系的概念和语法

pp <- ggplot(df2, aes(Year, Value)) +
  geom_bar(stat = "identity", aes(fill = lbs)) +
  transition_states(ID, 
          transition_length = 4, state_length = 2) +
    ease_aes('cubic-in-out')

但是

PUT my_index
{
  "mappings": {
    "_doc": {
      "properties": {
        "my_join_field": {
          "type": "join",
          "relations": {
            "parentx": "childx",
            "parenty": "childy"
          }
        }
      }
    }
  }
}

PUT my_index/_doc/101?refresh
{
  "text": "This is a question",
  "my_join_field": {
    "name": ["parentx","parenty" ]
  }
}

PUT my_index/_doc/102?routing=101&refresh
{
  "text": "This is an answer",
  "my_join_field": {
    "name": "childx", 
    "parent": "101" 
  }
}

PUT my_index/_doc/103?routing=101&refresh
{
  "text": "This is another answer",
  "my_join_field": {
    "name": "childy",
    "parent": "101"
  }
}

GET my_index/_search
GET my_index/_search?routing=101

#so far so good

无结果 为什么？