``` @Configuration @EnableAsync class AsynchConfig...

# spring

[Marcel Overdijk]

@Configuration
@EnableAsync
class AsynchConfig : AsyncConfigurerSupport() {

    override fun getAsyncExecutor(): Executor {
        val executor = ThreadPoolTaskExecutor()
        executor.setTaskDecorator(MDCTaskDecorator())
        executor.initialize()
        return executor
    }
}

[Jukka Siivonen]

Are you using Spring Boot?

[Marcel Overdijk]

Yes I'm using Spring Boot

[Jukka Siivonen]

Ok, I was suspecting that you are getting two instances of Executor, one created by Spring config (AsyncConfigurerSupport) and one Spring Boot auto-config (maybe TaskExecutionAutoConfiguration), but I'm not sure if this is possible.

[Jukka Siivonen]

for Async we just set up Exectutor by

[Jukka Siivonen]

@Bean
    fun taskExecutor(): Executor { return TaskExecutorBuilder()... }

(Kotlin)