Skip to content

Random CancellationException instead of ResourceAccessException after upgrading to Spring Boot 3.4.0 #33973

New issue
New issue
Not planned
Not planned
Random CancellationException instead of ResourceAccessException after upgrading to Spring Boot 3.4.0#33973
Assignees
rstoyanchev
Labels
in: webIssues in web modules (web, webmvc, webflux, websocket)status: supersededAn issue that has been superseded by anothertype: bugA general bug
@SimonPNorra

Description

@SimonPNorra
SimonPNorra
opened on Nov 26, 2024

Hi Spring-Team,

After upgrading to Spring Boot 3.4.0, we have encountered an issue with RestTemplate where random CancellationExceptions are thrown instead of the expected ResourceAccessException during timeout scenarios.

Observations:
This behavior is inconsistent; sometimes a CancellationException is thrown, and other times a ResourceAccessException is thrown.
This issue did not occur in previous versions of Spring Boot.

Reproduction:
We have created a test case to demonstrate the issue: https://github.com/SimonPNorra/timeout-execption-case

Steps to Reproduce:
Run the test case included in the project and observe the exceptions thrown. You will notice either a CancellationException or a ResourceAccessException occurring randomly.

Expected Behavior:
Consistent behavior with ResourceAccessException thrown during timeout scenarios.

Actual Behavior:
Random exceptions are thrown: either CancellationException or ResourceAccessException.

Please let us know if further information is required.

Thank you.

Regards

Activity

spring-projects-issues
added
status: waiting-for-triageAn issue we've not yet triaged or decided on
on Nov 26, 2024
wilkinsona

wilkinsona commented on Nov 26, 2024

@wilkinsona
wilkinsona
on Nov 26, 2024
Member

Thanks for the sample.

Unfortunately, on my machine, it doesn't reproduce the behavior that you've described. I've tried with both Java 21 and Java 23 and the exception was always a ResourceAccessException. I'm on macOS 14.7.1.

Can you please provide some more information about the OS you're running on and the version and distribution of Java that you're using? Also, please share the full stack trace of both the CancellationException and the ResourceAccessException that you're seeing.

wilkinsona
added
status: waiting-for-feedbackWe need additional information before we can continue
on Nov 26, 2024
SimonPNorra

SimonPNorra commented on Nov 27, 2024

@SimonPNorra
SimonPNorra
on Nov 27, 2024
Author

Hey @wilkinsona

Thank you for looking into this issue. Here is the information about my local machine, which I used to run the example:

Machine Details:

Device: MacBook Pro
Processor: Apple M1 Pro
Operating System: macOS 15.1.1 (24B91)
JDK: azul-21.0.2 (aarch64)

Stack Traces from the Example:
(Below are both stack traces as observed from running the test case.)

java.util.concurrent.CancellationException
	at java.base/java.util.concurrent.CompletableFuture.cancel(CompletableFuture.java:2510)
	at java.net.http/jdk.internal.net.http.common.MinimalFuture.cancel(MinimalFuture.java:109)
	at org.springframework.http.client.JdkClientHttpRequest$TimeoutHandler.lambda$new$0(JdkClientHttpRequest.java:234)
	at java.base/java.util.concurrent.CompletableFuture$UniRun.tryFire(CompletableFuture.java:787)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2179)
	at java.base/java.util.concurrent.CompletableFuture$DelayedCompleter.run(CompletableFuture.java:2931)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)

org.springframework.web.client.ResourceAccessException: I/O error on GET request for "http://localhost:49111/test": Request timed out
	at org.springframework.web.client.RestTemplate.createResourceAccessException(RestTemplate.java:926)
	at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:906)
	at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:801)
	at org.springframework.web.client.RestTemplate.getForEntity(RestTemplate.java:442)
	at com.example.timeoutexecptioncase.TimeoutExecptionCaseApplicationTests.contextLoads(TimeoutExecptionCaseApplicationTests.java:35)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:767)
	at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
	at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:156)
	at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:147)
	at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:86)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(InterceptingExecutableInvoker.java:103)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.lambda$invoke$0(InterceptingExecutableInvoker.java:93)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:92)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:86)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$8(TestMethodTestDescriptor.java:217)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:213)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:138)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:68)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:156)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:146)
	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:144)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:143)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:100)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:160)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:146)
	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:144)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:143)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:100)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:160)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:146)
	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:144)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:143)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:100)
	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:198)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:169)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:93)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:58)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:141)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:57)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:103)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:85)
	at org.junit.platform.launcher.core.DelegatingLauncher.execute(DelegatingLauncher.java:47)
	at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:63)
	at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:57)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)
	at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)
	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:232)
	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:55)
Caused by: java.net.http.HttpTimeoutException: Request timed out
	at org.springframework.http.client.JdkClientHttpRequest.executeInternal(JdkClientHttpRequest.java:124)
	at org.springframework.http.client.AbstractStreamingClientHttpRequest.executeInternal(AbstractStreamingClientHttpRequest.java:71)
	at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:81)
	at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:900)
	... 71 more

In addition, this issue first appeared in our application running as a GCP CloudRun service. The service operates using the following base image: FROM gcr.io/distroless/java21-debian12

Let me know if you need more details about the environment!

spring-projects-issues
added
status: feedback-providedFeedback has been provided
and removed
status: waiting-for-feedbackWe need additional information before we can continue
on Nov 27, 2024
wilkinsona

wilkinsona commented on Nov 27, 2024

@wilkinsona
wilkinsona
on Nov 27, 2024
Member

Thanks for the additional details and stack traces. The change in behavior that you've seen upon upgrading to Spring Boot 3.4 is due to this change in Spring Framework. We'll transfer this issue to the Framework team so that they can continue the investigation.

snicoll
transferred this issue fromspring-projects/spring-booton Nov 27, 2024
SimonPNorra

SimonPNorra commented on Nov 27, 2024

@SimonPNorra
SimonPNorra
on Nov 27, 2024
Author

Hi there,

I’ve updated my example project to include additional test scenarios:

  1. Unit Test (as included previously)
  2. Test from within the Spring application, which can be executed locally
  3. Test using a distroless Docker image based on gcr.io/distroless/java21-debian12, replicating the execution environment where this issue was originally observed

I hope these additions help with your investigation.

Thank you for your support!

aldex32

aldex32 commented on Jan 31, 2025

@aldex32
aldex32
on Jan 31, 2025

I am having the same issue as @SimonPNorra

rstoyanchev
added
in: webIssues in web modules (web, webmvc, webflux, websocket)
on Feb 3, 2025
jaceko

jaceko commented on Mar 20, 2025

@jaceko
jaceko
on Mar 20, 2025 · edited by jaceko

I'm having the same issue on Linux (JDK 21, Spring boot 3.4.3)

giampa91
added 3 commits that reference this issue on Apr 5, 2025

Fix throws only ResourceAccessException on timeout spring-projects#33973

86c337a

Fix throws only ResourceAccessException on timeout spring-projects#33973

8ffe31e

Fix throws only ResourceAccessException on timeout

a1ea767

11 remaining items

rstoyanchev
self-assigned this
on Aug 1, 2025
rstoyanchev
added
type: bugA general bug
and removed
status: waiting-for-triageAn issue we've not yet triaged or decided on
status: feedback-providedFeedback has been provided
on Aug 1, 2025
rstoyanchev
added this to the 6.2.10 milestone on Aug 1, 2025
rstoyanchev

rstoyanchev commented on Aug 1, 2025

@rstoyanchev
rstoyanchev
on Aug 1, 2025 · edited by rstoyanchev
Contributor

In the TimeoutHandler we call CompletableFuture#cancel and the Javadoc for that says:

If not already completed, completes this CompletableFuture with a CancellationException.

However, in some cases it is wrapped in ExecutionException and others it is not. Below is a stracktrace from when it is wrapped, and the cause is identical to when it is not wrapped as shown in comments above.

java.util.concurrent.ExecutionException: java.util.concurrent.CancellationException: Request cancelled
	at java.base/java.util.concurrent.CompletableFuture.wrapInExecutionException(CompletableFuture.java:345)
	at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:440)
	at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2094)
	at org.springframework.http.client.JdkClientHttpRequest.executeInternal(JdkClientHttpRequest.java:106)
	at org.springframework.http.client.AbstractStreamingClientHttpRequest.executeInternal(AbstractStreamingClientHttpRequest.java:71)
	at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:81)
	at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:900)
	at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:801)
	...
Caused by: java.util.concurrent.CancellationException: Request cancelled
	at java.net.http/jdk.internal.net.http.MultiExchange.cancel(MultiExchange.java:278)
	at java.net.http/jdk.internal.net.http.MultiExchange$CancelableRef.cancel(MultiExchange.java:187)
	at java.net.http/jdk.internal.net.http.common.MinimalFuture.cancel(MinimalFuture.java:107)
	at org.springframework.http.client.JdkClientHttpRequest$TimeoutHandler.lambda$new$0(JdkClientHttpRequest.java:234)
	at java.base/java.util.concurrent.CompletableFuture$UniRun.tryFire$$$capture(CompletableFuture.java:808)
	at java.base/java.util.concurrent.CompletableFuture$UniRun.tryFire(CompletableFuture.java)

Currently we only handle the wrapped case, but should also handle it not wrapped.

giampa91
added a commit that references this issue on Aug 2, 2025

CancellationExceptions are thrown instead of the expected ResourceAcc…

0d2c3e4
rstoyanchev

rstoyanchev commented on Aug 8, 2025

@rstoyanchev
rstoyanchev
on Aug 8, 2025
Contributor

Superseded by #34721.

rstoyanchev
closed this as not plannedon Aug 8, 2025
rstoyanchev
removed this from the 6.2.10 milestone on Aug 8, 2025
rstoyanchev
added
status: supersededAn issue that has been superseded by another
on Aug 8, 2025
rstoyanchev
added a commit that references this issue on Aug 8, 2025

Handle CancellationException in JdkClientHttpRequest

7a55ce4
github-actions
added
status: backportedAn issue that has been backported to maintenance branches
on Aug 8, 2025
github-actions
mentioned this on Aug 8, 2025
rstoyanchev
removed
status: backportedAn issue that has been backported to maintenance branches
on Aug 11, 2025
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

Labels

in: webIssues in web modules (web, webmvc, webflux, websocket)status: supersededAn issue that has been superseded by anothertype: bugA general bug

Type

No type

Projects

No projects

Milestone

No milestone

Relationships

None yet

    Development

    Participants

    @rstoyanchev@wilkinsona@jaceko@SimonPNorra@spring-projects-issues

    Issue actions
      Random CancellationException instead of ResourceAccessException after upgrading to Spring Boot 3.4.0 · Issue #33973 · spring-projects/spring-framework