如何更新弹性搜索中的字段类型 [英] How to update a field type in elasticsearch

问题描述

ElasticSearch文件对于如何执行此操作并不清楚。

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

我索引了一些tweets，其中一个字段created_at被索引为字符串而不是日期。通过卷曲调用，我无法找到如何使用此更改来重建索引。如果重新索引是一个复杂的过程，那么我更愿意删除那些内容并重新开始。但是，我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

您需要定义使用 Put Mapping AP 的映射I。

You need to define a mapping using Put Mapping API.

$ curl -XPUT 'http://localhost:9200/twitter/tweet/_mapping' -d '
{
    "tweet" : {
        "properties" : {
            "message" : {"type" : "string", "store" : "yes"}
        }
    }
}
'

日期可以定义如下： / p>

A date can be defined as follow:

{
    "tweet" : {
        "properties" : {
            "user" : {"type" : "string", "index" : "not_analyzed"},
            "message" : {"type" : "string", "null_value" : "na"},
            "postDate" : {"type" : "date"},
            "priority" : {"type" : "integer"},
            "rank" : {"type" : "float"}
        }
    }
}

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