RestHighLevelClient 连接相关说明,在特定场景如超时等会关闭连接。

相关elasticsearch连接介绍

https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/java-rest-high-getting-started-initialization.html

保持连接不关闭的方法

RestClientBuilder builder = RestClient.builder...
builder.setHttpClientConfigCallback(httpClientBuilder -> {
//核心代码 保活连接
httpClientBuilder.setKeepAliveStrategy((response, context) -> Duration.ofMinutes(3).toMillis());
httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);//安全认证
return httpClientBuilder;
});

这样再等待几分钟甚至更长时间后,再次查询就不会出现上方错误

标签: RestHighLevelClient, essearch连接关闭


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