Spring Data Elasticsearch：由于冲突而无法合并：[无法更新 [_source] 的启用设置]答案

【问题标题】：Spring Data Elasticsearch: Can't merge because of conflicts: [Cannot update enabled setting for [_source]]Spring Data Elasticsearch：由于冲突而无法合并：[无法更新 [_source] 的启用设置]
【发布时间】：2016-12-11 23:02:51
【问题描述】：

我正在尝试使用 Spring Data Elasticsearch 禁用 _source 字段，以便添加此属性：

"_source": {
    "enabled": false
}

我在 @Configuration 类中执行以下操作：

    @Bean
    public ElasticsearchTemplate elasticsearchTemplate() throws IOException {
        ElasticsearchTemplate template = new ElasticsearchTemplate(getNodeClient());
        Map<Object, Object> mapping = new LinkedHashMap<Object, Object>();
        if (template.indexExists(Computer.class)){
            mapping = template.getMapping(Computer.class);                  
        } else {
            template.createIndex(Computer.class);
        }
        LinkedHashMap<String, Boolean> hashMap = new LinkedHashMap<String, Boolean>();
        hashMap.put("enabled", false);
        mapping.put("_source", hashMap);
        template.putMapping(Computer.class, mapping);
        return template;
    }

但我得到以下异常：

java.lang.IllegalArgumentException: Can't merge because of conflicts: [Cannot update enabled setting for [_source]]
    at org.elasticsearch.index.mapper.internal.SourceFieldMapper.doMerge(SourceFieldMapper.java:458) ~[elasticsearch-2.2.0.jar:2.2.0]
    at org.elasticsearch.index.mapper.FieldMapper.merge(FieldMapper.java:380) ~[elasticsearch-2.2.0.jar:2.2.0]
    at org.elasticsearch.index.mapper.MetadataFieldMapper.merge(MetadataFieldMapper.java:75) ~[elasticsearch-2.2.0.jar:2.2.0]
    at org.elasticsearch.index.mapper.Mapping.merge(Mapping.java:120) ~[elasticsearch-2.2.0.jar:2.2.0]
    at org.elasticsearch.index.mapper.DocumentMapper.merge(DocumentMapper.java:392) ~[elasticsearch-2.2.0.jar:2.2.0]
    at org.elasticsearch.cluster.metadata.MetaDataMappingService$PutMappingExecutor.applyRequest(MetaDataMappingService.java:261) ~[elasticsearch-2.2.0.jar:2.2.0]
    at org.elasticsearch.cluster.metadata.MetaDataMappingService$PutMappingExecutor.execute(MetaDataMappingService.java:230) ~[elasticsearch-2.2.0.jar:2.2.0]
    at org.elasticsearch.cluster.service.InternalClusterService.runTasksForExecutor(InternalClusterService.java:458) ~[elasticsearch-2.2.0.jar:2.2.0]
    at org.elasticsearch.cluster.service.InternalClusterService$UpdateTask.run(InternalClusterService.java:762) ~[elasticsearch-2.2.0.jar:2.2.0]
    at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.runAndClean(PrioritizedEsThreadPoolExecutor.java:231) ~[elasticsearch-2.2.0.jar:2.2.0]
    at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.run(PrioritizedEsThreadPoolExecutor.java:194) ~[elasticsearch-2.2.0.jar:2.2.0]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) ~[na:1.8.0_102]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) ~[na:1.8.0_102]
    at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_102]

发生错误是因为使用该配置我试图将org.elasticsearch.index.mapper.internal.SourceFieldMapper 的enabled 变量设置为false，但由于某些奇怪的原因它正在检查已将该属性设置为 true 的实例。

如何将该字段配置为 false？

谢谢。

【问题讨论】：

可以分享一下你的实体类吗？

标签： spring elasticsearch spring-boot spring-data-elasticsearch

【解决方案1】：

仅当您尝试更新现有索引的映射时才会发生此错误。在您的情况下，已经有 _source 设置为 true 的“computer”索引。您可以通过运行来检查

GET /computer/_mapping

这会返回

{
  "computer": {
    "mappings": {
      "_source": {
        "enabled": true
      }
    }
  }
}

_source 归档的映射值无法更新。

如果您需要更改映射，请使用正确的映射创建一个新索引，并将您的数据重新索引到该索引中。

或者，您可以使用

删除计算机索引

DELETE /computer

Spring Data 将在启动时创建具有正确映射的索引。

【讨论】：