elasticsearch - Elasticsearch 5.x是否没有机制来静默删除不符合特定基于特定类型(给定映射)的字段？

Question

Elasticsearch文档(https://www.elastic.co/guide/en/elasticsearch/reference/current/dynamic-field-mapping.html)声明以下内容:

By default, when a previously unseen field is found in a document, Elasticsearch will add the new field to the type mapping.

因此，如果我们创建一个文档(事先没有索引/类型映射)，则如下所示:

curl -X POST 'http://localhost:9200/my_index/food/1' -d \
'{
  "name": "pie",
  "delicious": true,
  "age": 100.5
}'

自动发现类型，索引 food中类型 my_index的映射变为:

{
  "my_index": {
    "mappings": {
      "food": {
        "properties": {
          "age": { "type": "float" },
          "delicious": { "type": "boolean" },
          "name": {
            "type": "text",
            "fields": { "keyword": { "type": "keyword", "ignore_above": 256 } }
          }
        }
      }
    }
  }
}

如果我尝试将新文档添加到索引/类型为my_index / food的字段值之一
违反射(reflect)射规范的“契约(Contract)”，那么我发现elasticsearch返回一个
错误，并拒绝索引有问题的文档。

curl -X POST 'http://localhost:9200/my_index/food/2' -d \
'{
  "name": "goat",
  "delicious": false,
  "age": true
}'

造成:

 mapper_parsing_exception","reason":"failed to parse [age]"}],"type":"mapper_parsing_exception","reason":"failed to parse [age]","caused_by":{"type":"json_parse_exception","reason":"Current token (VALUE_TRUE) not numeric, can not use numeric value accessors\n

我的问题是:有什么方法可以配置 flex 搜索，以便我尝试
将此文档编入索引: { "name": "goat", "delicious": false, "age": true }
只会删除(不正确键入)字段“age”，并为给定文档的其余部分编制索引，如下所示:

'{ "name": "goat", "delicious": false}'

我猜没有可用的搜索功能，但想检查一下。提前致谢!

Answer 1

我是ElasticSearch的新手，对于+ 5.x分支来说，这是双重的，但是在阅读您的问题后，我偶然发现了ignore_malformed映射参数。

Sometimes you don’t have much control over the data that you receive. One user may send a login field that is a date, and another sends a login field that is an email address.

Trying to index the wrong datatype into a field throws an exception by default, and rejects the whole document. The ignore_malformed parameter, if set to true, allows the exception to be ignored. The malformed field is not indexed, but other fields in the document are processed normally.

最后一个细节似乎在描述您的用例，不确定，本周一直吞吐过多的焊锡烟雾。 :)
这是文档:
https://www.elastic.co/guide/en/elasticsearch/reference/current/ignore-malformed.html