在java elasticsearch上设置字段数据= true [英] set field data = true on java elasticsearch

问题描述

通过Eclipse运行Java弹性搜索查询。在测试该错误时遇到此错误，并且在API中找不到任何告诉我如何将该字段数据设置为true的错误

Running a java elastic search query through Eclipse. Getting this error when I am testing it, and I can't find anywhere in the API that tells me how I can set this field data to true

IllegalArgumentException [默认情况下
禁用文本字段上的字段数据。在[created]上设置fielddata = true，以通过反转反相索引将字段数据加载到
内存中。请注意，这可能会使
使用大量内存。或者，使用关键字字段代替。]

IllegalArgumentException[Fielddata is disabled on text fields by default. Set fielddata=true on [created] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead.]

有人知道我可以解决这个问题吗？

Does anyone know how I can fix this?

推荐答案

您必须修改索引映射属性：

You must modify index mapping properties:

try (XContentBuilder jsonBuilder = XContentFactory.jsonBuilder()) {
    final XContentBuilder builder = jsonBuilder
            .startObject()
              .startObject("your_type")
                .startObject("properties")
                  .startObject("your_field")
                    .field("type", "text")
                    .field("fielddata", true)/*setting fielddata*/
                  .endObject()
                .endObject()
              .endObject()
            .endObject();

    client.admin().indices().preparePutMapping("your_index")
            .setType("your_type")
            .setSource(builder)/*also there are overloads for setSource()*/
            .get();
}

OR

String source = "{\"your_type\":{\"properties\":{\"your_field\":{\"type\":\"text\",\"fielddata\":true}}}}";
client.admin().indices().preparePutMapping("your_index)
        .setType("your_type")
        .setSource(source, XContentType.JSON)
        .get();

结果：

{
  "your_index": {
    "aliases": {},
    "mappings": {
      "your_type": {
        "properties": {
          ...
          ...
          "your_field": {
            "type": "text",
            "fielddata": true,
            "fields": {
              "keyword": {
                "type": "keyword",
                "ignore_above": 256
              }
            }
          }
          ...
          ...
        }
      }
    }
  }
}

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