Spring Batch-多个作业未同时执行

Question

我在Spring Batch中同时执行多个作业时遇到问题。一次只能执行一个作业，而其他作业要等到当前正在运行的作业才能完成执行。

用例：

 Job_1 -> should run every second
 Job_2 -> should run every 5 seconds and only one instance of the job should run at a time. 

  Both Job 1 & 2 will run like a loop and will not complete.( null won't be returned from the reader)

问题：        这两个作业没有并行运行，并且只有JOB_1一直在运行。 JOB_2等待JOB_1完成，然后开始执行。

JOB配置：

带有SimpleAsyncTaskExecutor（）的JOB_1：

@Scheduled(fixedDelay = 1000L)
    public void Job1Scheduler() {
        JobParameters jobParameters = new JobParametersBuilder().addLong("dumyJob1", System.currentTimeMillis())
                .toJobParameters();
        try {
            Job1Launcher.run(JobOne, jobParameters);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

@Bean(name = "Job1Launcher")
public JobLauncher jobLauncher1(JobRepository jobRepository) throws Exception {

    SimpleJobLauncher jobLauncher1 = new SimpleJobLauncher();
    jobLauncher1.setJobRepository(jobRepository);
    jobLauncher1.setTaskExecutor(new SimpleAsyncTaskExecutor());
    jobLauncher1.afterPropertiesSet();
    return jobLauncher1;
}

@Bean
public Step dummyJob1Step() {
    return stepBuilderFactory.get("dummyJob1Step")
            .<String, String> chunk(1)
            .reader(DummyReader())
            .writer(DummyWriter())
            .build();
}

@Bean
public Job JobOne() {
    return jobBuilderFactory.get("JobOne").incrementer(new RunIdIncrementer())
            .flow(dummyJob1Step())
            .end()
            .build();
}

@Bean
public ItemWriter<? super String> DummyWriter() {
    // TODO Auto-generated method stub
    return new DummyWriter();
}

@Bean
public ItemReader<? extends String> DummyReader() {
    // TODO Auto-generated method stub
    return new DummyReader();
}

带有SyncTaskExecutor（）的JOB_2：

   @Scheduled(fixedDelay = 5000L)
public void Job2Scheduler() {
    JobParameters jobParameters = new JobParametersBuilder().addLong("dumyJob2", System.currentTimeMillis())
            .toJobParameters();
    try {
        Job2Launcher.run(JobTwo, jobParameters);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

@Bean(name = "Job2Launcher")
public JobLauncher jobLauncher2(JobRepository jobRepository) throws Exception {

    SimpleJobLauncher jobLauncher2 = new SimpleJobLauncher();
    jobLauncher2.setJobRepository(jobRepository);
    jobLauncher2.setTaskExecutor(new SyncTaskExecutor()); // Single JOB_2 should run at a time
    jobLauncher2.afterPropertiesSet();
    return jobLauncher2;
}

**Job 2's step & flow configuration will be same as Job 1**

请让我知道在配置中同时执行两个作业时错过了什么？

谢谢。