如何更新elasticsearch中的字段类型 [英] How to update a field type in elasticsearch

问题描述

ElasticSearch 文档并不清楚如何执行此操作.

The ElasticSearch documents just aren't clear on how to do this.

我索引了一些推文，其中一个字段 created_at 被索引为字符串而不是日期.我找不到如何通过 curl 调用重新索引此更改.如果重新索引是一个复杂的过程，那么我宁愿删除那里的内容并重新开始.但是，我也找不到如何指定字段类型！

I indexed some tweets, and one of the fields, created_at, indexed as a string instead of a date. I can't find how to reindex with this change via a curl call. If reindexing is a complicated process, then I would much rather just delete what's there and start over. But, I can't find how to specify the field types either!

非常感谢任何帮助.

推荐答案

您需要使用 放置映射 API.

curl -XPUT 'http://localhost:9200/twitter/_doc/_mapping' -H 'Content-Type: application/json'  -d '
{
    "_doc" : {
        "properties" : {
            "message" : {"type" : "text", "store" : true}
        }
    }
}
'

日期可以定义如下:

curl -XPUT 'http://localhost:9200/twitter/_doc/_mapping' -H 'Content-Type: application/json'  -d '
{
    "_doc" : {
        "properties" : {
            "user" : {"type" : "keyword", "null_value" : "na"},
            "message" : {"type" : "text"},
            "postDate" : {"type" : "date"},
            "priority" : {"type" : "integer"},
            "rank" : {"type" : "float"}
        }
    }
}
'

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