Spring Boot + Hibernate Search：忽略所需的索引状态？

Question

连接 Hibernate Search 到 Elasticsearch，我注意到当我部署一个非 ES 时，我的服务不会连接成功。在我看来，设置 required_index_status 的环境变量被忽略了。我正在寻找一个错字或类似的东西半小时，但找不到任何东西。

pom.xml

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.7.RELEASE</version>
</parent>
...
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-search</artifactId>
    <version>5.11.1.Final</version>
</dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-search-elasticsearch</artifactId>
    <version>5.11.0.Final</version>
</dependency>

application.yml

spring: 
  data:
    rest:
      basePath: /
  jpa:
    hibernate:
      ddl-auto: update
    show-sql: false

环境变量：

$ kubectl describe pod <NAME>

Environment:
  ...
  SPRING_JPA_PROPERTIES_HIBERNATE_SEARCH_DEFAULT_INDEXMANAGER:                         elasticsearch
  SPRING_JPA_PROPERTIES_HIBERNATE_SEARCH_DEFAULT_ELASTICSEARCH_HOST:                   elasticsearch
  SPRING_JPA_PROPERTIES_HIBERNATE_SEARCH_DEFAULT_ELASTICSEARCH_REQUIRED_INDEX_STATUS:  yellow

日志消息 1：

Caused by: org.hibernate.search.exception.SearchException: HSEARCH400024: Timed out while waiting for for index 'myindex' to reach status 'green'; status was still 'yellow' after 10000ms.

记录消息 2：

Caused by: org.hibernate.search.exception.SearchException: HSEARCH400007: Elasticsearch request failed.
Request: GET /_cluster/health/myindex with parameters {wait_for_status=green, timeout=10000ms}
Response: 408 'Request Timeout' with body
{
  "cluster_name": "my-elastic-cluster",
  "status": "yellow",
  "timed_out": true,
  "number_of_nodes": 1,
  "number_of_data_nodes": 1,
  "active_primary_shards": 5,
  "active_shards": 5,
  "relocating_shards": 0,
  "initializing_shards": 0,
  "unassigned_shards": 5,
  "delayed_unassigned_shards": 0,
  "number_of_pending_tasks": 0,
  "number_of_in_flight_fetch": 0,
  "task_max_waiting_in_queue_millis": 0,
  "active_shards_percent_as_number": 50.0
}

我们可以清楚地看到它正在等待状态“绿色”而不是“黄色”。

Answer 1

我相信您的环境变量 SPRING_JPA_PROPERTIES_HIBERNATE_SEARCH_DEFAULT_ELASTICSEARCH_REQUIRED_INDEX_STATUS 正在被转换为 spring.jpa.properties.hibernate.search.default.elasticsearch.required.index.status，而它应该被转换为 spring.jpa.properties.hibernate.search.default.elasticsearch.required_index_status（注意末尾附近的下划线）。

我不知道 Spring 是如何准确翻译环境变量名的，但一定有办法避开下划线。也许是双下划线？您可能应该看看他们的文档。

最坏的情况，您可以将spring.jpa.properties.hibernate.search.default.elasticsearch.required_index_status 设置为application.properties 中的自定义环境变量，然后设置该自定义环境变量而不是您所做的。