Java 调用Elasticsearch报错java.lang.IllegalStateException: Request cannot be executed； I/O reactor statu-Toy模板网

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一、问题描述

线上ES查询服务出现奇怪的问题，调用es查询数据的接口进行过一次查询，过几分钟之后再次用这个接口进行查询就不行了。

二、报错排查

简短报错：java.lang.IllegalStateException: Request cannot be executed; I/O reactor status: STOPPED

2023-09-28 06:58:29.166 ERROR 5612 --- [nio-8888-exec-2] c.c.e.service.impl.MailServiceImpl       : java.lang.RuntimeException: Request cannot be executed; I/O reactor status: STOPPED
2023-09-28 06:58:29.168 ERROR 5612 --- [nio-8888-exec-2] o.a.c.c.C.[.[.[/es].[dispatcherServlet]  : Servlet.service() for servlet [dispatcherServlet] in context with path [/es] threw exception [Request processing failed; nested exception is java.lang.RuntimeException: java.lang.RuntimeException: Request cannot be executed; I/O reactor status: STOPPED] with root cause

java.lang.IllegalStateException: Request cannot be executed; I/O reactor status: STOPPED
	at org.apache.http.util.Asserts.check(Asserts.java:46) ~[httpcore-4.4.14.jar!/:4.4.14]
	at org.apache.http.impl.nio.client.CloseableHttpAsyncClientBase.ensureRunning(CloseableHttpAsyncClientBase.java:90) ~[httpasyncclient-4.1.4.jar!/:4.1.4]
	at org.apache.http.impl.nio.client.InternalHttpAsyncClient.execute(InternalHttpAsyncClient.java:123) ~[httpasyncclient-4.1.4.jar!/:4.1.4]
	at org.elasticsearch.client.RestClient.performRequest(RestClient.java:279) ~[elasticsearch-rest-client-7.13.2.jar!/:7.13.2]
	at org.elasticsearch.client.RestClient.performRequest(RestClient.java:270) ~[elasticsearch-rest-client-7.13.2.jar!/:7.13.2]
	at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1654) ~[elasticsearch-rest-high-level-client-7.13.2.jar!/:7.13.2]
	at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:1624) ~[elasticsearch-rest-high-level-client-7.13.2.jar!/:7.13.2]
	at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:1594) ~[elasticsearch-rest-high-level-client-7.13.2.jar!/:7.13.2]
	at org.elasticsearch.client.RestHighLevelClient.search(RestHighLevelClient.java:1110) ~[elasticsearch-rest-high-level-client-7.13.2.jar!/:7.13.2]
	at com.cma.elasticsearch.service.impl.MailServiceImpl.findByMbidAndKeyword(MailServiceImpl.java:72) ~[classes!/:1.0.4-RELEASE]
	at com.cma.elasticsearch.controller.MailController.findByMbidAndKeywordV1(MailController.java:94) ~[classes!/:1.0.4-RELEASE]
	at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source) ~[na:na]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_332]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_332]

三、解决问题

经过排查发现可能是出现异常RestHighLevelClient提前关闭，导致后续接口调用出现问题。

1.下面的代码如果到抛出异常的情况会导致RestHighLevelClient停止和关闭

java.lang.illegalstateexception: request cannot be executed; i/o reactor sta,Elasticsearch,Java,java,开发语言

2.如果仍然有问题，可能就是httpclient版本低的问题，建议是pom修改升级版本

我这里是ES 7.13.3，升级后的httpclient是4.4.14。可以参考下面的依赖

		</dependency>
		<!-- httpclient、httpcore、 httpcore-nio这三个依赖 -->
			<dependency>
	    <groupId>org.apache.httpcomponents</groupId>
	    <artifactId>httpclient</artifactId>
	    <version>4.5.13</version>
	</dependency>
	
	<dependency>
	    <groupId>org.apache.httpcomponents</groupId>
	    <artifactId>httpcore-nio</artifactId>
	    <version>4.4.14</version>
	</dependency>
	<!-- httpclient、httpcore、 httpcore-nio这三个依赖 -->
	<dependency>
	    <groupId>org.apache.httpcomponents</groupId>
	    <artifactId>httpcore</artifactId>
	    <version>4.4.14</version>
	</dependency>

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