Question

正在形成SearchRequest并通过使用ElasticSearch RestHighLevelClient试图从ElasticSearch中获取文档。但是，尽管ES中的搜索文档出现以下错误。

请在下面找到堆栈跟踪：

`18-Sep-2018 06:35:55.819 SEVERE [Thread-10] com.demo.searchengine.dao.DocumentSearch.getDocumentByName listener timeout after waiting for [30000] ms
 java.io.IOException: listener timeout after waiting for [30000] ms
    at org.elasticsearch.client.RestClient$SyncResponseListener.get(RestClient.java:663)
    at org.elasticsearch.client.RestClient.performRequest(RestClient.java:222)
    at org.elasticsearch.client.RestClient.performRequest(RestClient.java:194)
    at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:443)
    at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:429)
    at org.elasticsearch.client.RestHighLevelClient.search(RestHighLevelClient.java:368)
    at com.demo.searchengine.dao.DocumentSearch.getDocumentByName(DocumentSearch.java:76)
    at com.demo.searchengineservice.mqservice.Service.searchByDocuments(Service.java:43)
    at com.demo.searchengineservice.mqservice.Consumer.consume(Consumer.java:27)
    at com.demo.utils.Consumer$1$1.run(Consumer.java:89)
    at java.lang.Thread.run(Unknown Source)`

请在下面找到我的代码：

public class SearchEngineClient {
    private static PropertiesFile propertiesFile = PropertiesFile.getInstance();

    private final static String elasticHost =propertiesFile.extractPropertiesFile().getProperty("ELASTIC_HOST");

    private static RestHighLevelClient instance = new RestHighLevelClient(RestClient.builder(
            new HttpHost(elasticHost, 9200, "http"),
            new HttpHost(elasticHost, 9201, "http")));

    public static RestHighLevelClient getInstance() {
        return instance;
    }
}

我使用下面的客户端实例从ES获得响应。

searchResponse = SearchEngineClient.getInstance().search(contentSearchRequest);

Answer 1

似乎无法从外部访问您的Elasticsearch服务器问题。默认情况下，ES服务器将仅绑定到localhost，这意味着无法从外部访问它。

因此，在您的远程ES服务器上，您应该找到elasticsearch.yml配置文件。在此文件中，将network.host更改为您的IP地址或0.0.0.0，以在所有接口上进行侦听。更改之后，您需要重新启动ES。

弹性搜索HightlevelRestClient SearchRequest超时问题

1 个答案: