Spring Async ThreadPoolTaskScheduler not initialized

Question

I'm trying to use Async annotation in Spring but I'm getting

java.lang.IllegalStateException: ThreadPoolTaskScheduler not initialized 

error, when I try to run the method marked as Async. The following is the configuration for Async:

@EnableScheduling @EnableAsync @Configuration  public class SchedulingConfiguration implements AsyncConfigurer{      @Override     public Executor getAsyncExecutor() {         ThreadPoolTaskScheduler scheduler = new ThreadPoolTaskScheduler();         scheduler.setPoolSize(10);         return scheduler;     }  } 

and the following is the declaration of async method.

@Async @Transactional(value = "baseTransactionManager", isolation = Isolation.READ_COMMITTED) public void foo(Bar bar) {// some code here} 

What am I missing in here?

Thanks in advance.

Answer 1

You have to explicitly call scheduler.initialize() after setting all properties but before returning the scheduler.

See full working test case here.