DefaultAsyncAutoConfiguration override a implicit AsyncTaskExecutor

[single-wolf]

problem

spring-aop has a implicit rule for determining default AsyncExecutor when there`s no AsyncConfigurer existed

See AsyncExecutionAspectSupport.java#L227

DefaultAsyncAutoConfiguration will override it in the above case

@Configuration
@ConditionalOnMissingBean(AsyncConfigurer.class)
  static class DefaultTracedAsyncConfigurerSupport extends AsyncConfigurerSupport {
    @Autowired
    @Lazy
    private Tracer tracer;
    @Override
    public Executor getAsyncExecutor() {
      return new TracedExecutor(new SimpleAsyncTaskExecutor(), tracer);
    }
  }

version

java version "1.8.0_131"
spring-aop 4.3.11
opentracing-spring-cloud-core latest