Quartz Scheduler：在3的线程池下重新运行同一作业

Question

我正在尝试将Quartz Scheduler集成到我们的Spring应用程序中，具有10个作业，每个作业执行3分钟（Thread.sleep（3Min）），每个作业在每小时的第59分钟运行，如下cron表达式所示。

  

0 0/59 * * *？

注意：不使用任何群集，而是将JDBC存储作为MySQL使用，仅在一台计算机上运行。

要解释以下输出，

• 职位名称用 BSQJ-
表示
• “ ENTERED”是指进入作业执行状态。
• “正在退出”表示退出Job执行状态。

输出如下：

INFO: Server startup in 55196 ms
ENTERED: Job Execution for the JOb Name:  BSQJ-1 at the time of 2019/02/08 08:59:00
ENTERED: Job Execution for the JOb Name:  BSQJ-2 at the time of 2019/02/08 08:59:01
ENTERED: Job Execution for the JOb Name:  BSQJ-3 at the time of 2019/02/08 08:59:03
Feb 08, 2019 9:00:02 AM org.quartz.impl.jdbcjobstore.JobStoreSupport recoverMisfiredJobs
INFO: Handling 7 trigger(s) that missed their scheduled fire-time.
Feb 08, 2019 9:01:02 AM org.quartz.impl.jdbcjobstore.JobStoreSupport recoverMisfiredJobs
INFO: Handling 3 trigger(s) that missed their scheduled fire-time.
EXITING: the Job Execution for the Job Name:  BSQJ-1 at the time of 2019/02/08 09:02:00
EXITING: the Job Execution for the Job Name:  BSQJ-2 at the time of 2019/02/08 09:02:01
ENTERED: Job Execution for the JOb Name:  BSQJ-1 at the time of 2019/02/08 09:02:02
Feb 08, 2019 9:02:03 AM org.quartz.impl.jdbcjobstore.JobStoreSupport recoverMisfiredJobs
INFO: Handling 7 trigger(s) that missed their scheduled fire-time.
EXITING: the Job Execution for the Job Name:  BSQJ-3 at the time of 2019/02/08 09:02:03
ENTERED: Job Execution for the JOb Name:  BSQJ-2 at the time of 2019/02/08 09:02:09
ENTERED: Job Execution for the JOb Name:  BSQJ-4 at the time of 2019/02/08 09:02:11
Feb 08, 2019 9:03:02 AM org.quartz.impl.jdbcjobstore.JobStoreSupport recoverMisfiredJobs
INFO: Handling 1 trigger(s) that missed their scheduled fire-time.
Feb 08, 2019 9:04:03 AM org.quartz.impl.jdbcjobstore.JobStoreSupport recoverMisfiredJobs
INFO: Handling 6 trigger(s) that missed their scheduled fire-time.
EXITING: the Job Execution for the Job Name:  BSQJ-1 at the time of 2019/02/08 09:05:02
Feb 08, 2019 9:05:02 AM org.quartz.impl.jdbcjobstore.JobStoreSupport recoverMisfiredJobs
INFO: Handling 1 trigger(s) that missed their scheduled fire-time.
ENTERED: Job Execution for the JOb Name:  BSQJ-5 at the time of 2019/02/08 09:05:04
EXITING: the Job Execution for the Job Name:  BSQJ-2 at the time of 2019/02/08 09:05:09
EXITING: the Job Execution for the Job Name:  BSQJ-4 at the time of 2019/02/08 09:05:11
ENTERED: Job Execution for the JOb Name:  BSQJ-3 at the time of 2019/02/08 09:05:11
Feb 08, 2019 9:06:02 AM org.quartz.impl.jdbcjobstore.JobStoreSupport recoverMisfiredJobs
INFO: Handling 5 trigger(s) that missed their scheduled fire-time.
ENTERED: Job Execution for the JOb Name:  BSQJ-6 at the time of 2019/02/08 09:06:08
Feb 08, 2019 9:08:02 AM org.quartz.impl.jdbcjobstore.JobStoreSupport recoverMisfiredJobs
INFO: Handling 4 trigger(s) that missed their scheduled fire-time.
EXITING: the Job Execution for the Job Name:  BSQJ-5 at the time of 2019/02/08 09:08:04
ENTERED: Job Execution for the JOb Name:  BSQJ-7 at the time of 2019/02/08 09:08:07
EXITING: the Job Execution for the Job Name:  BSQJ-3 at the time of 2019/02/08 09:08:11
ENTERED: Job Execution for the JOb Name:  BSQJ-8 at the time of 2019/02/08 09:08:13
EXITING: the Job Execution for the Job Name:  BSQJ-6 at the time of 2019/02/08 09:09:08
Feb 08, 2019 9:10:03 AM org.quartz.impl.jdbcjobstore.JobStoreSupport recoverMisfiredJobs
INFO: Handling 2 trigger(s) that missed their scheduled fire-time.
ENTERED: Job Execution for the JOb Name:  BSQJ-9 at the time of 2019/02/08 09:10:07
EXITING: the Job Execution for the Job Name:  BSQJ-7 at the time of 2019/02/08 09:11:07
EXITING: the Job Execution for the Job Name:  BSQJ-8 at the time of 2019/02/08 09:11:13
Feb 08, 2019 9:12:02 AM org.quartz.impl.jdbcjobstore.JobStoreSupport recoverMisfiredJobs
INFO: Handling 1 trigger(s) that missed their scheduled fire-time.
ENTERED: Job Execution for the JOb Name:  BSQJ-10 at the time of 2019/02/08 09:12:05
EXITING: the Job Execution for the Job Name:  BSQJ-9 at the time of 2019/02/08 09:13:07
EXITING: the Job Execution for the Job Name:  BSQJ-10 at the time of 2019/02/08 09:15:05

从上到下的问题如下：

1. 在第一次出现时，启动三个作业后，调度程序具有 作为处理7个未按计划点火时间的触发器而给出的， 然后立即给出另一个声明，因为处理3会触发 错过了他们预定的开火时间，然后更改为3 触发器。为什么会这样，最初我的理解是，可能是 更新错过的触发器的触发时间，但是当 即使没有其他新职位，也从7个触发器更改为3个 为何将其更改为3个触发器然后是6个触发器？
2. 很高兴在将线程池设置为3时开始执行3个作业，但是一旦执行完毕，为什么 BSQJ-1和BSQJ-2（第一个和第二个工作）为两个相同的工作 不管他们必须在 下个小时的下一个59分钟。 ？我不明白为什么会这样 发生了，我是否缺少任何要设置的配置。

3. 如上所述，在第二点中，当我计算出执行总数为10个作业中的13个时，这意味着3个作业被重新执行。 这让我感到困惑，并想知道我是否犯了任何错误。

   如果Quartz Scheduler的行为方式如此，那么我需要更改设计以维持工作的独立状态，无论是否完成。如果未完成，则在该时间实例中针对同一作业再次进行计算。

在此先感谢并感谢您的见解。