c# - Elasticsearch 错误 "failed to find nested object under path"

Question

我知道这之前已经被问过多次，但现有的问题或答案都没有帮助我。

查询 Elasticsearch 时出现以下错误:

[nested] failed to find nested object under path [departures]

我正在运行的查询如下:

{
    "explain":true,
    "from":0,
    "query":{
        "nested":{
            "path":"departures",
            "query":{
                "term":{
                    "departures.yearMonth":{
                        "value":202007
                    }
                }
            }
        }
    },
    "size":20
}

我的映射如下:

{
    "tours":{
        "mappings":{
            "properties":{
                "departures":{
                    "type":"nested",
                    "properties":{
                        "guaranteed":{
                            "type":"boolean"
                        },
                        "spacesRemaining":{
                            "type":"long"
                        },
                        "startDate":{
                            "type":"date"
                        },
                        "yearMonth":{
                            "type":"long"
                        }
                    }
                }
            }
        }
    }
}

最后，从 Kibana 截取的屏幕截图显示我的索引中有一个有效条目。


任何想法为什么这个查询会像这样失败？

Answer 1

尝试设置 ignore_unmapped在您的查询请求中标记为 true

https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-nested-query.html

ignore_unmapped (Optional, boolean) Indicates whether to ignore an unmapped path and not return any documents instead of an error. Defaults to false.

If false, Elasticsearch returns an error if the path is an unmapped field.

You can use this parameter to query multiple indices that may not contain the field path.