spring boot 3.4.3 + TimedAspect causes thread to hang #34522
Description
I have an application that stopped working correctly after updating to 3.4.3.
I have prepared a minimal app that reproduces the issue.
package com.example.demo; import io.micrometer.core.annotation.Timed; import io.micrometer.core.aop.TimedAspect; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.annotation.Bean; import org.springframework.stereotype.Service; @SpringBootApplication public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); } @Bean public TimedAspect timedAspect() { return new TimedAspect(); } @Service public static class DemoService { public DemoService(DemoFactory demoFactory) { Thread initThread = new Thread(demoFactory::initSomething); initThread.setName("DemoService-initThread"); initThread.start(); } } @Service public static class DemoFactory { @Timed(value = "init_timed") void initSomething() { System.out.println("INIT SOMETHING"); } } } <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-aop</artifactId> </dependency>Output when running the application on 3.4.2:
:: Spring Boot :: (v3.4.2) 2025-02-28T22:08:46.129+01:00 INFO 53499 --- [ main] com.example.demo.DemoApplication : Starting DemoApplication using Java 21.0.6 with PID 53499 (/somepath/spring-boot-issue-0/target/classes started by pedziwia in /somepath/spring-boot-issue-0) 2025-02-28T22:08:46.132+01:00 INFO 53499 --- [ main] com.example.demo.DemoApplication : No active profile set, falling back to 1 default profile: "default" 2025-02-28T22:08:46.700+01:00 INFO 53499 --- [vice-initThread] o.s.b.f.s.DefaultListableBeanFactory : Creating singleton bean 'timedAspect' in thread "DemoService-initThread" while other thread holds singleton lock for other beans [timedAspect] 2025-02-28T22:08:46.715+01:00 INFO 53499 --- [ main] o.s.b.f.s.DefaultListableBeanFactory : Creating singleton bean 'org.springframework.boot.actuate.autoconfigure.availability.AvailabilityHealthContributorAutoConfiguration' in thread "main" while other thread holds singleton lock for other beans [] INIT SOMETHING 2025-02-28T22:08:47.192+01:00 INFO 53499 --- [ main] com.example.demo.DemoApplication : Started DemoApplication in 1.287 seconds (process running for 1.728) Disconnected from the target VM, address: '127.0.0.1:58305', transport: 'socket' Process finished with exit code 0 Output when running the application on 3.4.3:
:: Spring Boot :: (v3.4.3) 2025-02-28T22:09:46.824+01:00 INFO 53949 --- [ main] com.example.demo.DemoApplication : Starting DemoApplication using Java 21.0.6 with PID 53949 (/somepath/spring-boot-issue-0/target/classes started by pedziwia in /somepath/spring-boot-issue-0) 2025-02-28T22:09:46.827+01:00 INFO 53949 --- [ main] com.example.demo.DemoApplication : No active profile set, falling back to 1 default profile: "default" 2025-02-28T22:09:47.379+01:00 INFO 53949 --- [vice-initThread] o.s.b.f.s.DefaultListableBeanFactory : Creating singleton bean 'timedAspect' in thread "DemoService-initThread" while other thread holds singleton lock for other beans [timedAspect] 2025-02-28T22:09:47.857+01:00 INFO 53949 --- [ main] com.example.demo.DemoApplication : Started DemoApplication in 1.251 seconds (process running for 1.698) The process does not terminate, it hangs forever and "INIT SOMETHING" is never printed.
I compared the classpath and found that downgrading the versions of two dependencies:
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-actuator-autoconfigure</artifactId> <version>3.4.2</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>6.2.2</version> </dependency>allows the program to start and work correctly again.
I have prepared a repository with a minimal app in Docker that reproduces this issue.
https://github.com/180254/spring-boot-issue-44498