生产一次RedisCommandTimeoutException问题分析

客官°小女子只卖身不卖艺 2022-09-11 06:19 339阅读 0赞

1、在某个时间段，生产日志大量出现RedisCommandTimeoutException，一共98次：

grep "RedisCommandTimeoutException"  \*\_2021-09-10.5.log |wc -l

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16][]

2、查看第一次出现的位置：

grep -C 100  "RedisCommandTimeoutException" \*\_2021-09-10.5.log |head -201

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 1][]

完整异常信息如下：

2021-09-10 14:50:33.423 INFO [http-nio-7001-exec-362]com.***.web.config.GlobalExceptionHandler.printLog:300 -Method[Method[invoke:-1]]错误码:global_exception_warn_web_log,错误信息:Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out after 2 second(s)-->Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out after 2 second(s)
    com.cfc.common.utils.TranFailException: Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out after 2 second(s)-->Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out after 2 second(s)
    	at com.cfc.common.utils.LogUtil$HanderExVo.invoke(LogUtil.java:412)
    	at com.cfc.common.utils.LogUtil.handerEx(LogUtil.java:319)
    	at com.cfc.common.utils.LogUtil.handerEx(LogUtil.java:280)
    	at com.cfc.common.utils.LogUtil.handerEx(LogUtil.java:257)
    	at com.cfc.common.utils.LogUtil.handerEx(LogUtil.java:245)
    	at com.***.web.config.GlobalExceptionHandler.jsonErrorHandler(GlobalExceptionHandler.java:47)
    	at sun.reflect.GeneratedMethodAccessor6324.invoke(Unknown Source)
    	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    	at java.lang.reflect.Method.invoke(Method.java:497)
    	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:104)
    	at org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver.doResolveHandlerMethodException(ExceptionHandlerExceptionResolver.java:408)
    	at org.springframework.web.servlet.handler.AbstractHandlerMethodExceptionResolver.doResolveException(AbstractHandlerMethodExceptionResolver.java:61)
    	at org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver.resolveException(AbstractHandlerExceptionResolver.java:140)
    	at org.springframework.web.servlet.handler.HandlerExceptionResolverComposite.resolveException(HandlerExceptionResolverComposite.java:79)
    	at org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1298)
    	at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1110)
    	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1056)
    	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
    	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
    	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)
    	at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
    	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
    	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 org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
    	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:118)
    	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:92)
    	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:118)
    	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.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)
    	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:118)
    	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:200)
    	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:118)
    	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:490)
    	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:408)
    	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:853)
    	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1587)
    	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    	at java.lang.Thread.run(Thread.java:745)
    Caused by: org.springframework.dao.QueryTimeoutException: Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out after 2 second(s)
    	at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:70)
    	at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41)
    	at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44)
    	at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42)
    	at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:268)
    	at org.springframework.data.redis.connection.lettuce.LettuceStringCommands.convertLettuceAccessException(LettuceStringCommands.java:799)
    	at org.springframework.data.redis.connection.lettuce.LettuceStringCommands.get(LettuceStringCommands.java:68)
    	at org.springframework.data.redis.connection.DefaultedRedisConnection.get(DefaultedRedisConnection.java:253)
    	at org.springframework.data.redis.core.DefaultValueOperations$1.inRedis(DefaultValueOperations.java:57)
    	at org.springframework.data.redis.core.AbstractOperations$ValueDeserializingRedisCallback.doInRedis(AbstractOperations.java:59)
    	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:224)
    	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:184)
    	at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:95)
    	at org.springframework.data.redis.core.DefaultValueOperations.get(DefaultValueOperations.java:53)
    	at com.***.basic.redis.service.RedisService.get(RedisService.java:134)
    	at com.***.basic.service.impl.AppParamServiceImpl.queryOneParamValue(AppParamServiceImpl.java:55)
    	at com.***.service.service.impl.OrdersServiceImpl.taskResourceUsers(OrdersServiceImpl.java:969)
    	at com.***.service.service.impl.OrdersServiceImpl.getTaskUsers(OrdersServiceImpl.java:925)
    	at com.***.service.service.impl.OrdersServiceImpl.reformatOrders(OrdersServiceImpl.java:630)
    	at com.***.service.service.impl.OrdersServiceImpl.getBussOrders(OrdersServiceImpl.java:913)
    	at com.***.service.service.impl.OrdersServiceImpl$$FastClassBySpringCGLIB$$64bca082.invoke(<generated>)
    	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
    	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749)
    	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
    	at org.springframework.transaction.interceptor.TransactionInterceptor$$Lambda$719/1122356159.proceedWithInvocation(Unknown Source)
    	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:295)
    	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
    	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)
    	at com.***.service.service.impl.OrdersServiceImpl$$EnhancerBySpringCGLIB$$ea15cf3a.getBussOrders(<generated>)
    	at com.***.web.controller.BusinessInfoController.listBussinfo(BusinessInfoController.java:207)
    	at com.***.web.controller.BusinessInfoController$$FastClassBySpringCGLIB$$fa862eb4.invoke(<generated>)
    	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
    	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749)
    	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
    	at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:56)

3、首先检查redis连接问题，是否可用，通过telnet 等命令，发现redis服务端是正常的，那么redis可用性没有问题

telnet  ip  port

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 2][]

4、在项目中搜索用到lettuce的地方，原来是springboot自身集成的 lettuce

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 3][]

5、也不像是程序客户端，连接池占满，获取不到连接的问题。所以从第一次抛出异常的日志中继续找问题：

找到 http-nio-7001-exec-362  线程，传入的参数：

入参=ROLE\_PARAMS,administrator

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 4][]

6、异常详细信息，关联代码的地方：

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 5][]

7、对应代码的地方：

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 6][]

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 7][]

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 8][]

8、去看一下redis中的数据，get key，发现是存在的，所以排除了是redis没有获取到的问题；

而且不是每次get都会报错，偶然性的；

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 9][]

9、但是redis获取key的时候，是失败了，而我们的redis，用的是

RedisTemplate，springboot集成的

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 10][]

pom中引用的redis，注意这里，并没有添加指定的版本号，如果不指定版本号，spring-boot-starter-parent 会为我们提供常用jar包版本（如果不用指定，会有一个默认指定）

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 11][]

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 12][]

10、用jar -vtf   \*.jar 命令，解压查看集成的版本：

这里用了lettuce-core-5.1.8.RELEASE.jar的版本

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 13][]

11、问题猜测，尝试解决：

用的springboot自带的redis，底层集成了lettuce，

以lettuce驱动连接redis的过程当中，会出现连接断开的情况，导致无法新增成功，超过一定时间还没有正常，就会出现连接超时的情况；

修改后有待验证！

解决方案，在pom.xml中更换指定的lettuce版本，或者更换成jedis客户端，这里排除掉lettuce：

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 14][]

12、参考以下大量博客，猜测得出结论，版本问题：

[Redis command timed out nested exception is io.lettuce.core.RedisCommandTimeoutException\_single\_cong的博客-CSDN博客][Redis command timed out nested exception is io.lettuce.core.RedisCommandTimeoutException_single_cong_-CSDN]

[SpringBoot集成Redis后，运行一段时间后发现RedisCommandTimeoutException - 灰信网（软件开发博客聚合）][SpringBoot_Redis_RedisCommandTimeoutException -]  
[Issues · lettuce-io/lettuce-core · GitHub][Issues _ lettuce-io_lettuce-core _ GitHub]

[Springboot2.x集成lettuce连接redis集群报超时异常Command timed out after 6 second(s) - 朱季谦 - 博客园][Springboot2.x_lettuce_redis_Command timed out after 6 second_s_ - _ -][Lettuce bug(RedisCommandTimeoutException) in spring-boot-autoconfigure 2.0.5 · Issue \#1756 · lettuce-io/lettuce-core · GitHub][Lettuce bug_RedisCommandTimeoutException_ in spring-boot-autoconfigure 2.0.5 _ Issue _1756 _ lettuce-io_lettuce-core _ GitHub]  
  
  
[io.lettuce.core.RedisCommandTimeoutException: Command timed out · Issue \#1092 · lettuce-io/lettuce-core · GitHub][io.lettuce.core.RedisCommandTimeoutException_ Command timed out _ Issue _1092 _ lettuce-io_lettuce-core _ GitHub]  
![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5bCP5ZOl6aqR5Y2V6L2m_size_20_color_FFFFFF_t_70_g_se_x_16 15][]

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[Redis command timed out nested exception is io.lettuce.core.RedisCommandTimeoutException_single_cong_-CSDN]: https://blog.csdn.net/single_cong/article/details/101019146
[SpringBoot_Redis_RedisCommandTimeoutException -]: https://www.freesion.com/article/2230793708/
[Issues _ lettuce-io_lettuce-core _ GitHub]: https://github.com/lettuce-io/lettuce-core/issues
[Springboot2.x_lettuce_redis_Command timed out after 6 second_s_ - _ -]: https://www.cnblogs.com/zhujiqian/p/14552873.html
[Lettuce bug_RedisCommandTimeoutException_ in spring-boot-autoconfigure 2.0.5 _ Issue _1756 _ lettuce-io_lettuce-core _ GitHub]: https://github.com/lettuce-io/lettuce-core/issues/1756
[io.lettuce.core.RedisCommandTimeoutException_ Command timed out _ Issue _1092 _ lettuce-io_lettuce-core _ GitHub]: https://github.com/lettuce-io/lettuce-core/issues/1092
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