elasticsearch Elastic3模板

如何使用杂音3散列？你能给我一个每个字段的评论样本吗

我已经阅读了上的文档，他们提供了如下示例：

PUT my_index
{
     "mappings": { --> what is these?
    "my_type": { --> what is these?
      "properties": { --> what is these?
        "my_field": { --> what is these?
          "type": "keyword", --> what is these?
          "fields": { --> what is these?
            "hash": {
              "type": "murmur3"
            }
          }
        }
      }
    }
  }
}

还请包括如何在GET上使用它