Elasticsearch 6映射创建抛出错误

Question

我使用ES-6，默认情况下，candidateCreationTime在Kibana中被索引为number。如何将其映射到日期值？

{
    "_index": "candidatesources",
    "_type": "candidatesource",
    "_id": "5c08b8930bcfe318ca2a00f4",
    "_version": 3,
    "_score": 1,
    "_source": {
        "candidateNotes": "Some Notes",
        "candidateCreationTime": 1544066189124,
        "state": "verified"
    }
}

我试过了

PUT candidatesources/_mapping/csdate
{
  "properties": {
  "candidateCreationTime": {
      "type": "date"
    }
  }
}

但是它给出了如下的错误

Rejecting mapping update to [candidatesources] as the final mapping would have more than 1 type: [candidatesource, csdate]

我该如何使它成为date而不是number

Answer 1

在es6.x中，只能有一个映射类型。见这。此外，正如前面提到的，不能更新现有字段的这里映射。因此，在您的示例中，您需要创建具有正确映射的新索引，并将数据重新索引到新索引，或者可以将多场添加到candidateCreationTime映射为date字段的现有字段。