elasticsearch - ElasticSearch中的模板

Question

我对索引模板以及在创建新文档时使用此模板毫无疑问。
1.放置_template / template_1
我只提到了自定义分析的映射文件中的一个字段。

 {
        "index_patterns": ["te*", "bar*"],
        "settings":{
             "analysis": {
                        "analyzer": {
                            "analyzer2": {
                                "filter": [
                                    "standard"
                                ],
                                "tokenizer": "whitespace"
                            },
                             "analyzer1": {
                                "filter": [
                                    "standard"
                                ],
                                "tokenizer": "tokenizer1"
                            }
                        },
                           "tokenizer": {
                            "tokenizer1": {
                                "min_gram": "3",
                                "tokenize_on_chars": [
                                    "letter",
                                    "digit"
                                ],
                                "type": "edge_ngram",
                                "max_gram": "3"
                            }
                        }
             }
        },
        "mappings": {
                "_doc": {
                    "properties": {
                        "search": {
                            "type": "text",

                            "fields": {
                               "analyzer1": {
                                    "type": "text",
                                    "analyzer":"analyzer1"
                                },
                               "analyzer2": {
                                    "type": "text",
                                    "analyzer":"analyzer2"
                                },

                                "keyword": {
                                    "type": "keyword",
                                    "ignore_above": 256
                                }
                            }
                        }
                    }
                }
     }
    }
 _template/template_1

2.开机自检/ tea / _doc / 1
使用新的元数据创建此类型的新文档

{
    "search":"elastic",
    "metadata":"search"
}

3.获取/ tea / _doc / _mapping
当检索映射文件时，默认情况下将分析新添加的字段，而不是自定义分析字段。在文档中找到新的元数据时，默认情况下如何应用这些自定义分析器

{
    "tea": {
        "mappings": {
            "_doc": {
                "properties": {
                    "metadata": {
                        "type": "text",
                        "fields": {
                            "keyword": {
                                "type": "keyword",
                                "ignore_above": 256
                            }
                        }
                    },
                    "search": {
                        "type": "text",
                        "fields": {
                            "analyzer1": {
                                "type": "text",
                                "analyzer": "analyzer1"
                            },
                            "analyzer2": {
                                "type": "text",
                                "analyzer": "analyzer2"
                            },
                            "keyword": {
                                "type": "keyword",
                                "ignore_above": 256
                            }
                        }
                    }
                }
            }
        }
    }
}

Answer 1

根据analyzer documentation的定义，如果您将分析器命名为“default”，它将被用作默认分析器。

从文档中:

At index time, Elasticsearch will look for an analyzer in this order:

• The analyzer defined in the field mapping.
• An analyzer named default in the index settings.
• The standard analyzer.