elasticsearch - 无法在Elasticsearch中更新映射

Question

当使用anaylzer将PUT /job/_mapping/doc/放入映射时，却发生冲突。
但是映射中没有anaylzer。

PUT /job/_mapping/doc/
{
    "properties":{
        "title": {
            "type": "text",
            "analyzer":"ik_smart",
            "search_analyzer":"ik_smart"
        }
    }
}

{
    "error": {
        "root_cause": [
            {
                "type": "illegal_argument_exception",
                "reason": "Mapper for [title] conflicts with existing mapping in other types:\n[mapper [title] has different [analyzer]]"
            }
        ],
        "type": "illegal_argument_exception",
        "reason": "Mapper for [title] conflicts with existing mapping in other types:\n[mapper [title] has different [analyzer]]"
    },
    "status": 400
}

                    "title": {
                        "type": "text",
                        "fields": {
                            "keyword": {
                                "type": "keyword",
                                "ignore_above": 256
                            }
                        },
                        "fielddata": true
                    },

输出配置是这样的。

output {
  elasticsearch {
    hosts => ["<Elasticsearch Hosts>"]
    user => "<user>"
    password => "<password>"
    index => "<table>"
    document_id => "%{<MySQL_PRIMARY_KEY>}"
  }
}

Answer 1

您无法在elasticsearch中更新映射，可以添加映射，但不能更新映射。 Elasticsearch在索引编制时使用映射，这就是为什么您无法更新现有字段的映射的原因。 Analyzer是映射的一部分，实际上，如果您未指定默认值，则Analyzer会告诉Elastic如何索引文档。

使用您的新映射(包括分析器)创建新索引

将您的文档从现有索引重新索引到新索引(https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-reindex.html)