Elasticsearch Date字段的默认值 [英] Default value of Elasticsearch Date Field

问题描述

我正在使用以下方法在ES中创建动态映射：

I'm creating a dynamic mapping in ES using:

{
  "template": "infobox*",
  "mappings": {
    "_default_": {
      "dynamic_templates": [
        {
          "string_fields": {
            "match": "*",
            "match_mapping_type": "string",
            "mapping": {
              "type": "string",
              "index": "analyzed",
              "analyzer": "my_completion_analyzer",
              "fielddata": {
                "format": "disabled"
              },
              "fields": {
                "raw": {
                  "type": "string",
                  "index": "not_analyzed",
                  "ignore_above": 256
                }
              }
            }
          }
        }
      ]
    }
  }
}

因此，每当我索引具有日期的文档时， d（ birthYear ），它将自动创建一个日期为 的字段（ birthYear ）。 c $ c>类型。因此，每当我没有 birthYear 时，我都会发送一个空字符串''，这将引发异常 mapper_parsing_exception，无法解析[birthYear] 。

So, whenever I index a document having date field (birthYear), it automatically creates a field (birthYear) with date type. So, whenever I don't have a birthYear, I send an empty string '', which then raises an exception mapper_parsing_exception, failed to parse [birthYear].

有什么办法可以解决这个问题？我可以分配默认值吗？

Is there any way I can handle this? Can I assign a default value?

推荐答案

您可以添加 ignore_malformed：true 所有 date 字段，或在全局设置：

You either add ignore_malformed: true to all date fields or you set this globally:

仅 date 字段：

only date fields:

  "dynamic_templates": [
    {
      "string_fields": {
        "match": "*",
        "match_mapping_type": "string",
        "mapping": {
          "type": "string",
          "index": "analyzed",
          "analyzer": "whitespace",
          "fielddata": {
            "format": "disabled"
          },
          "fields": {
            "raw": {
              "type": "string",
              "index": "not_analyzed",
              "ignore_above": 256
            }
          }
        }
      }
    },
    {
      "date_fields": {
        "match": "*",
        "match_mapping_type": "date",
        "mapping": {
          "type": "date",
          "ignore_malformed": true
        }
      }
    }
  ]

全局设置：

{
  "settings": {
    "index.mapping.ignore_malformed": true
  }, 
  "mappings": {
    "_default_": {
      "dynamic_templates": [
        {
          "string_fields": {
            "match": "*",
            "match_mapping_type": "string",
            "mapping": {
              "type": "string",
              "index": "analyzed",
              "analyzer": "whitespace",
              "fielddata": {
                "format": "disabled"
              },
              "fields": {
                "raw": {
                  "type": "string",
                  "index": "not_analyzed",
                  "ignore_above": 256
                }
              }
            }
          }
        }
      ]
    }
  }
}

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