使用若依的微服务项目时，在本地启动项目时报错如下：
java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 2 milliseconds, 351400 nanoseconds delay) for com.alibaba.nacos.shaded.io.grpc.stub.ClientCalls$GrpcFuture@1c6e0a08[status=PENDING, info=[GrpcFuture{clientCall={delegate={delegate=ClientCallImpl{method=MethodDescriptor{fullMethodName=Request/request, type=UNARY, idempotent=false, safe=false, sampledToLocalTracing=true, requestMarshaller=com.alibaba.nacos.shaded.io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@4351171a, responseMarshaller=com.alibaba.nacos.shaded.io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@3c2772d1, schemaDescriptor=com.alibaba.nacos.api.grpc.auto.RequestGrpc$RequestMethodDescriptorSupplier@37d00a23}}}}}]]
at com.alibaba.nacos.shaded.com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:508)
at com.alibaba.nacos.common.remote.client.grpc.GrpcClient.serverCheck(GrpcClient.java:148)
at com.alibaba.nacos.common.remote.client.grpc.GrpcClient.connectToServer(GrpcClient.java:264)
at com.alibaba.nacos.common.remote.client.RpcClient.start(RpcClient.java:390)
at com.alibaba.nacos.client.config.impl.ClientWorker$ConfigRpcTransportClient.ensureRpcClient(ClientWorker.java:885)
at com.alibaba.nacos.client.config.impl.ClientWorker$ConfigRpcTransportClient.getOneRunningClient(ClientWorker.java:1044)
at com.alibaba.nacos.client.config.impl.ClientWorker$ConfigRpcTransportClient.queryConfig(ClientWorker.java:940)
at com.alibaba.nacos.client.config.impl.ClientWorker.getServerConfig(ClientWorker.java:397)
at com.alibaba.nacos.client.config.NacosConfigService.getConfigInner(NacosConfigService.java:166)
at com.alibaba.nacos.client.config.NacosConfigService.getConfig(NacosConfigService.java:94)
at com.alibaba.cloud.nacos.client.NacosPropertySourceBuilder.loadNacosData(NacosPropertySourceBuilder.java:85)
at com.alibaba.cloud.nacos.client.NacosPropertySourceBuilder.build(NacosPropertySourceBuilder.java:73)
at com.alibaba.cloud.nacos.client.NacosPropertySourceLocator.loadNacosPropertySource(NacosPropertySourceLocator.java:199)
at com.alibaba.cloud.nacos.client.NacosPropertySourceLocator.loadNacosDataIfPresent(NacosPropertySourceLocator.java:186)
at com.alibaba.cloud.nacos.client.NacosPropertySourceLocator.loadNacosConfiguration(NacosPropertySourceLocator.java:158)
at com.alibaba.cloud.nacos.client.NacosPropertySourceLocator.loadSharedConfiguration(NacosPropertySourceLocator.java:116)
at com.alibaba.cloud.nacos.client.NacosPropertySourceLocator.locate(NacosPropertySourceLocator.java:101)
at org.springframework.cloud.bootstrap.config.PropertySourceLocator.locateCollection(PropertySourceLocator.java:51)
at org.springframework.cloud.bootstrap.config.PropertySourceLocator.locateCollection(PropertySourceLocator.java:47)
at org.springframework.cloud.bootstrap.config.PropertySourceBootstrapConfiguration.initialize(PropertySourceBootstrapConfiguration.java:95)
at org.springframework.boot.SpringApplication.applyInitializers(SpringApplication.java:618)
at org.springframework.boot.SpringApplication.prepareContext(SpringApplication.java:385)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:306)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1317)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
at com.ruoyi.gateway.RuoYiGatewayApplication.main(RuoYiGatewayApplication.java:17)
但是服务可以正常使用，为了解决这个报错，在网上搜索一番，发现都不是我这个问题，特此记录一下：
若依的微服务默认导的nacos依赖版本是
<alibaba.nacos.version>2.0.4</alibaba.nacos.version>
而我本地使用的是2.0.3，将版本修改为本地nacos版本后解决了问题。
java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 2 milliseconds, 351400 nanosec
使用若依的微服务项目时，在本地启动项目时报错如下：java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 2 milliseconds, 351400 nanoseconds delay)
Request idle tim
ed
out at 12
3000
ms.
That means there was no activity (read or write) for 12
3000
ms and the connection was clos
ed
.
如果不活动的链接大于123秒的话会自动关闭；
参考：https://stackoverflow.com/questi...
连接nacos异常[NA] fail
ed
to update serviceName: UAT_GROUP@@**-** Nacos
Exception
: Request
Exception
nacos服务连接异常：Server check fail, please check server 10.8.7.152 ,port 9848 is available , error ={}
java.util.concurrent
.
Timeout
Exception
:
Wait
ed
3000
mill
ise
conds
设置熔断器检测时间（默认1秒）
hystrix.command.default.execution.isolation.thread.
timeout
InMill
ise
conds
: 5000
关闭熔断器超时检测时间功能，也就是不超时
hystrix.command.default.
2021-12-06 14:47:23.427 INFO 69058 --- [ main] org.reflections.Reflections : Reflections took 198 ms to scan 301 urls, producing 0 keys and 0 values
2021-12-06 14:47:23.439 INFO 69058 --- [ main] org.reflections.Reflecti...
:: BladeX 2.9.0.RELEASE :: inte-dmall:dev :: Running SpringBoot 2.3.12.RELEASE ::
2022-03-16 15:06:06.138 INFO 19224 — [ main] org.reflections.Reflections : Reflections took 45 ms to scan 1 urls, producing 3 keys and 6 values
2022-0
今天接手一个“写的很复杂”的代码。多线程请求，有时候就会丢失返回值。
程序是这样设定的，请求执行后自动执行重写的complete()方法，把数值写入全局变量map中，之后对map进行操作。
其中的代码很复杂，就不贴上来了。map中偶尔会缺失数据，但不报错。
后来我把complete()方法提取到主线程执行后，occur
ed
Timeout
Exception
。
第一时间想到的是client设
问题：spark
Exception
in thread "main"
java.util.concurrent
.
Timeout
Exception
: Futures tim
ed
out after [300]
在运行spark任务时，如果提示上述错误，可以分三步逐步排错：
1）首先check你提交任务时的参数，一般情况下提高excutor的个数就可以避免这种错误；
2）若1不行，就得改配置...
java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 2 milliseconds, 351400 nanosec
10537
java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 2 milliseconds, 351400 nanosec
危险游戏i:
java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 2 milliseconds, 351400 nanosec
小李成长记n:
java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 2 milliseconds, 351400 nanosec
小zz同学:
java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 2 milliseconds, 351400 nanosec
D_wanglufei:
java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 2 milliseconds, 351400 nanosec
xiaoyangzhiliu:
