前言：

最近需要对es集群定时进行索引的segment合并，使用java 的restClientAPI进行操作，对于一些大索引进行合并时，默认的连接时间肯定是不够的，导致请求超时。这里整理并记录一下。

es版本：7.4
es LOW RestClientAPI 7.4

问题描述：

在JAVA中使用elasticsearch的RestClient API合并es大索引的segment时，出现TimeoutException。

ERROR [https-jsse-nio-443-exec-4] 2020-07-09 23:31:54 (EsMiniDaansouDataInfoWithBLOBsUtil.java:80) java.net.SocketTimeoutException: 30,000 milliseconds timeout on connection http-outgoing-0 [ACTIVE]
	at org.elasticsearch.client.RestClient.extractAndWrapCause(RestClient.java:808)
	at org.elasticsearch.client.RestClient.performRequest(RestClient.java:248)
	at org.elasticsearch.client.RestClient.performRequest(RestClient.java:235)
	at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1611)
	at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:1581)
	at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:1551)
	at org.elasticsearch.client.RestHighLevelClient.bulk(RestHighLevelClient.java:531)
	at cn.dxszxw.elasticsearch.esUtils.EsMiniDaansouDataInfoWithBLOBsUtil.increaseEsData(EsMiniDaansouDataInfoWithBLOBsUtil.java:76)
	at cn.dxszxw.controller.ElasticsearchController.createMiniDaansouDataInfoWithBLOBsAllIndexByRange(ElasticsearchController.java:146)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:123)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.SocketTimeoutException: 30,000 milliseconds timeout on connection http-outgoing-0 [ACTIVE]
	at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.timeout(HttpAsyncRequestExecutor.java:387)
	at org.apache.http.impl.nio.client.InternalIODispatch.onTimeout(InternalIODispatch.java:92)
	at org.apache.http.impl.nio.client.InternalIODispatch.onTimeout(InternalIODispatch.java:39)
	at org.apache.http.impl.nio.reactor.AbstractIODispatch.timeout(AbstractIODispatch.java:175)
	at org.apache.http.impl.nio.reactor.BaseIOReactor.sessionTimedOut(BaseIOReactor.java:261)
	at org.apache.http.impl.nio.reactor.AbstractIOReactor.timeoutCheck(AbstractIOReactor.java:502)
	at org.apache.http.impl.nio.reactor.BaseIOReactor.validate(BaseIOReactor.java:211)
	at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:280)
	at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104)
	at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:591)
	... 1 more

回到顶部

解决方法：

所以我们将之前的初始化RestClient的代码做了如下的修改，相关代码如下：

public static final int DEFAULT_CONNECT_TIMEOUT_MILLIS = 10000;
public static final int DEFAULT_SOCKET_TIMEOUT_MILLIS = 300000;
public static final int DEFAULT_CONNECT_REQUEST_TIMEOUT_MILLIS = 1000;

/**
 * 新建es 集群连接
 * @return
 */
public static RestClient createConnect ()  {

   RestClient restClient = RestClient.builder(
           new HttpHost(hostname, port, ELASTICSEARCH_SCHEMA.HTTP.getSchema())).
           setRequestConfigCallback(new RestClientBuilder.RequestConfigCallback() {
                   @Override
                   public RequestConfig.Builder customizeRequestConfig(RequestConfig.Builder requestConfigBuilder) {
                       requestConfigBuilder.setConnectTimeout(DEFAULT_CONNECT_TIMEOUT_MILLIS);
                       requestConfigBuilder.setSocketTimeout(DEFAULT_SOCKET_TIMEOUT_MILLIS);
                       requestConfigBuilder.setConnectionRequestTimeout(DEFAULT_CONNECT_REQUEST_TIMEOUT_MILLIS);
                       return requestConfigBuilder;
       }
   }).build();

   return restClient;
}

参考文章：https://blog.csdn.net/wangweislk/article/details/78839384

__EOF__

本文作者：彬在俊
本文链接：https://www.cnblogs.com/erlou96/p/16878237.html
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