Я использую Spring Reactive WebClient для выполнения HTTP-вызовов. Он использует JettyClientHttpConnector внизу. Я сталкиваюсь с проблемой, которая возникает часто, но не всегда.
При запуске службы иногда все вызовы через веб-клиент выдают InterruptedException (трассировка стека в конце). Примерно после 200 запросов мы начинаем получать приведенное ниже исключение «Недостаточно настроенных потоков», возможно, потому, что более ранние потоки не освобождаются (можно ли освободить эти потоки, чтобы они принимали следующие запросы?).
Что вызывает сбой запросов с InterruptedException? Я проверил, что запросы не достигают нижестоящей службы.
org.springframework.web.reactive.function.client.WebClientRequestException: Insufficient configured threads: required=200 \u003c max=200 for QueuedThreadPool[CustomJettyHttpClient@4fe3f9ef]@5ee9a1c4{STARTED,8\u003c=11\u003c=200,i=2,r=-1,q=0}[ReservedThreadExecutor@2e87a488{reserved=0/2,pending=0}]; nested exception is java.lang.IllegalStateException: Insufficient configured threads: required=200 \u003c max=200 for QueuedThreadPool[CustomJettyHttpClient@4fe3f9ef]@5ee9a1c4{STARTED,8\u003c=11\u003c=200,i=2,r=-1,q=0}[ReservedThreadExecutor@2e87a488{reserved=0/2,pending=0}]
Зависимость
org.springframework:spring-webflux:jar:5.3.21.RELEASE
org.eclipse.jetty:jetty-client:9.4.48v20220622
org.springframework.boot:spring-boot-starter-jetty:jar:2.7.1.RELEASE
org.springframework.cloud:spring-cloud-stream-reactive:jar:2.2.0.RELEASE
WebClientConfig
WebClient.Builder.clone()
.clientConnector(new JettyClientHttpConnector(new HttpClient()))
.exchangeStrategies(ExchangeStrategies.builder().codecs((configurer) -> {
configurer.defaultCodecs().maxInMemorySize(2097152);
}).build())
.build();
КлиентВызов
URI request = UriComponentsBuilder
.fromUriString("foo")
.path("/path")
.build();
webClient.post()
.uri(request)
.contentType(MediaType.APPLICATION_JSON)
.body(BodyInserters.fromObject(requestbody))
.retrieve()
.bodyToMono(responsebody);
Исключение:
org.springframework.web.reactive.function.client.WebClientRequestException: nested exception is java.lang.InterruptedException?
org.springframework.web.reactive.function.client.ExchangeFunctions$DefaultExchangeFunction.lambda$wrapException$9(ExchangeFunctions.java:141) ~[spring-webflux-5.3.21.jar!/:5.3.21]?
reactor.core.publisher.MonoErrorSupplied.subscribe(MonoErrorSupplied.java:55) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.Mono.subscribe(Mono.java:4397) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onError(FluxOnErrorResume.java:103) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.FluxPeek$PeekSubscriber.onError(FluxPeek.java:222) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.FluxPeek$PeekSubscriber.onError(FluxPeek.java:222) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.Operators.error(Operators.java:198) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoError.subscribe(MonoError.java:53) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.19.jar!/:3.4.19]?
org.springframework.cloud.sleuth.instrument.web.client.TraceExchangeFilterFunction$MonoWebClientTrace.subscribe(TraceExchangeFilterFunction.java:136) ~[spring-cloud-sleuth-instrumentation-3.1.2.jar!/:3.1.2]?
reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:157) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:129) ~[reactor-core-3.4.19.jar!/:3.4.19]?
org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onNext(ScopePassingSpanSubscriber.java:89) ~[spring-cloud-sleuth-instrumentation-3.1.2.jar!/:3.1.2]?
reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2398) ~[reactor-core-3.4.19.jar!/:3.4.19]?
org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.request(ScopePassingSpanSubscriber.java:75) ~[spring-cloud-sleuth-instrumentation-3.1.2.jar!/:3.1.2]?
reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:171) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:110) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:96) ~[reactor-core-3.4.19.jar!/:3.4.19]?
org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onSubscribe(ScopePassingSpanSubscriber.java:68) ~[spring-cloud-sleuth-instrumentation-3.1.2.jar!/:3.1.2]?
reactor.core.publisher.MonoCurrentContext.subscribe(MonoCurrentContext.java:36) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoDeferContextual.subscribe(MonoDeferContextual.java:55) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.Mono.subscribe(Mono.java:4397) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.FluxFlatMap.trySubscribeScalarMap(FluxFlatMap.java:200) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoFlatMap.subscribeOrReturn(MonoFlatMap.java:53) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:57) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.FluxRetryWhen.subscribe(FluxRetryWhen.java:77) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoRetryWhen.subscribeOrReturn(MonoRetryWhen.java:46) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:57) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:157) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:129) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2398) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:171) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:110) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:96) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoJust.subscribe(MonoJust.java:55) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:157) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1816) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoFlatMap$FlatMapInner.onNext(MonoFlatMap.java:249) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1816) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:151) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1816) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:151) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onNext(FluxFilterFuseable.java:118) ~[reactor-core-3.4.19.jar!/:3.4.19]?
org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onNext(ScopePassingSpanSubscriber.java:89) ~[spring-cloud-sleuth-instrumentation-3.1.2.jar!/:3.1.2]?
reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2398) ~[reactor-core-3.4.19.jar!/:3.4.19]?
org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.request(ScopePassingSpanSubscriber.java:75) ~[spring-cloud-sleuth-instrumentation-3.1.2.jar!/:3.1.2]?
reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.request(FluxFilterFuseable.java:191) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:110) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onSubscribe(FluxFilterFuseable.java:87) ~[reactor-core-3.4.19.jar!/:3.4.19]?
org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onSubscribe(ScopePassingSpanSubscriber.java:68) ~[spring-cloud-sleuth-instrumentation-3.1.2.jar!/:3.1.2]?
reactor.core.publisher.MonoCurrentContext.subscribe(MonoCurrentContext.java:36) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:157) ~[reactor-core-3.4.19.jar!/:3.4.19]?
org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onNext(ScopePassingSpanSubscriber.java:89) ~[spring-cloud-sleuth-instrumentation-3.1.2.jar!/:3.1.2]?
reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2398) ~[reactor-core-3.4.19.jar!/:3.4.19]?
org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.request(ScopePassingSpanSubscriber.java:75) ~[spring-cloud-sleuth-instrumentation-3.1.2.jar!/:3.1.2]?
reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:110) ~[reactor-core-3.4.19.jar!/:3.4.19]?
org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onSubscribe(ScopePassingSpanSubscriber.java:68) ~[spring-cloud-sleuth-instrumentation-3.1.2.jar!/:3.1.2]?
reactor.core.publisher.MonoCurrentContext.subscribe(MonoCurrentContext.java:36) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.Mono.subscribe(Mono.java:4397) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.FluxFlatMap$FlatMapMain.onNext(FluxFlatMap.java:426) ~[reactor-core-3.4.19.jar!/:3.4.19]?
org.springframework.cloud.sleuth.instrument.reactor.ScopePassingSpanSubscriber.onNext(ScopePassingSpanSubscriber.java:89) ~[spring-cloud-sleuth-instrumentation-3.1.2.jar!/:3.1.2]?
reactor.core.publisher.FluxPublishOn$PublishOnSubscriber.runAsync(FluxPublishOn.java:440) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.publisher.FluxPublishOn$PublishOnSubscriber.run(FluxPublishOn.java:527) ~[reactor-core-3.4.19.jar!/:3.4.19]?
org.springframework.cloud.sleuth.instrument.reactor.ReactorSleuth.lambda$null$6(ReactorSleuth.java:324) ~[spring-cloud-sleuth-instrumentation-3.1.2.jar!/:3.1.2]?
reactor.core.scheduler.WorkerTask.call(WorkerTask.java:84) ~[reactor-core-3.4.19.jar!/:3.4.19]?
reactor.core.scheduler.WorkerTask.call(WorkerTask.java:37) ~[reactor-core-3.4.19.jar!/:3.4.19]?
java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]?
java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[na:na]?
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na]?
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na]?
java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]?Caused by: java.lang.InterruptedException: null?
java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1040) ~[na:na]?
java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1345) ~[na:na]?
java.base/java.util.concurrent.CountDownLatch.await(CountDownLatch.java:232) ~[na:na]?
org.eclipse.jetty.io.ManagedSelector.doStart(ManagedSelector.java:127) ~[jetty-io-9.4.48.v20220622.jar!/:9.4.48.v20220622]?
org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73) ~[jetty-util-9.4.48.v20220622.jar!/:9.4.48.v20220622]?
org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:169) ~[jetty-util-9.4.48.v20220622.jar!/:9.4.48.v20220622]?
org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:110) ~[jetty-util-9.4.48.v20220622.jar!/:9.4.48.v20220622]?
org.eclipse.jetty.io.SelectorManager.doStart(SelectorManager.java:262) ~[jetty-io-9.4.48.v20220622.jar!/:9.4.48.v20220622]?
org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73) ~[jetty-util-9.4.48.v20220622.jar!/:9.4.48.v20220622]?
org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:169) ~[jetty-util-9.4.48.v20220622.jar!/:9.4.48.v20220622]?
org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:110) ~[jetty-util-9.4.48.v20220622.jar!/:9.4.48.v20220622]?
org.eclipse.jetty.client.AbstractConnectorHttpClientTransport.doStart(AbstractConnectorHttpClientTransport.java:64) ~[jetty-client-9.4.48.v20220622.jar!/:9.4.48.v20220622]?
org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73) ~[jetty-util-9.4.48.v20220622.jar!/:9.4.48.v20220622]?
org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:169) ~[jetty-util-9.4.48.v20220622.jar!/:9.4.48.v20220622]?
org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:110) ~[jetty-util-9.4.48.v20220622.jar!/:9.4.48.v20220622]?
org.eclipse.jetty.client.HttpClient.doStart(HttpClient.java:255) ~[jetty-client-9.4.48.v20220622.jar!/:9.4.48.v20220622]?
org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73) ~[jetty-util-9.4.48.v20220622.jar!/:9.4.48.v20220622]?
org.springframework.http.client.reactive.JettyClientHttpConnector.connect(JettyClientHttpConnector.java:115) ~[spring-web-5.3.21.jar!/:5.3.21]?
org.springframework.web.reactive.function.client.ExchangeFunctions$DefaultExchangeFunction.exchange(ExchangeFunctions.java:103) ~[spring-webflux-5.3.21.jar!/:5.3.21]?
org.springframework.cloud.sleuth.instrument.web.client.TraceExchangeFilterFunction$MonoWebClientTrace.subscribe(TraceExchangeFilterFunction.java:135) ~[spring-cloud-sleuth-instrumentation-3.1.2.jar!/:3.1.2]?\t... 69 common frames omitted?
Попробуйте запустить свой причал HttpClient
, прежде чем отдать его весне JettyClientHttpConnector
.
Ваш код:
WebClient.Builder.clone()
.clientConnector(new JettyClientHttpConnector(new HttpClient()))
...
Измененный код:
HttpClient httpClient = new HttpClient();
QueuedThreadPool threadPool = new QueuedThreadPool();
threadPool.setMaxThreads(400);
httpClient.setExecutor(threadPool);
httpClient.start();
WebClient.Builder.clone()
.clientConnector(new JettyClientHttpConnector(httpClient))
...
Это позволит компонентам Jetty запускаться правильно, до ленивой инициализации стороны весны. Бонус в том, что теперь вы можете управлять пулом потоков.
Используемые 200 потоков могут быть вполне нормальными, в зависимости от того, как вы используете клиент. (например: все 200 запросов могут быть активны одновременно и обрабатываться).
Нередко при агрессивном использовании HttpClient
система с тысячами потоков подключена к десяткам тысяч удаленных сайтов (чаще при использовании HTTP/2, чем HTTP/1).
Вы можете периодически использовать httpClient.dump()
для получения строкового дампа состояния HttpClient в этот момент времени, включая то, как он использует соединения, пулы соединений, запросы, ответы, пул потоков и т. д.
Помните о конфигурации Jetty HttpClient
для таких вещей, как setMaxConnectionsPerDestination
и setMaxRequestsQueuedPerDestination
, которые могут оказаться полезными в вашей ситуации.