6

我在单例 EJB 中定义了一些持久性计时器，如下所示（使用 WildFly 9.0.2 final）。

@Startup
@Singleton
@Lock(LockType.READ)
public class BackgroundJobManager implements BackgroundJobService {

    @Schedule(dayOfMonth = "1", month = "Jan", year = "*", hour = "0", minute = "0", second = "0", persistent = true)
    private void doYearlyJob() {
        //...
    }

    @Schedule(hour = "*", minute = "*/5", second = "0", persistent = true)
    private void updateTopSellers() {
        //...
    }

    @Schedule(hour = "*", minute = "*/1", second = "0", persistent = true)
    private void updateFeedback() {
        //...
    }

    //...
}

在服务器启动和重新部署应用程序时会发出几个警告，如下所示（这些只是其中的几个）。

19:46:51,687 WARN  [org.jboss.as.ejb3] (EJB default - 3) WFLYEJB0043: A previous execution of timer [id=15baaed1-d804-48fc-acdb-80ea3e04735f timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 16:25:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:51 IST 2015.
19:46:51,796 WARN  [org.jboss.as.ejb3] (EJB default - 4) WFLYEJB0043: A previous execution of timer [id=fc285ef2-c7a1-4a2e-af57-d320c769b445 timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 22:50:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:51 IST 2015.
19:46:51,890 WARN  [org.jboss.as.ejb3] (EJB default - 5) WFLYEJB0043: A previous execution of timer [id=15baaed1-d804-48fc-acdb-80ea3e04735f timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 16:26:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:51 IST 2015.
19:46:51,953 WARN  [org.jboss.as.ejb3] (EJB default - 6) WFLYEJB0043: A previous execution of timer [id=fc285ef2-c7a1-4a2e-af57-d320c769b445 timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 22:55:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:51 IST 2015.
19:46:51,984 WARN  [org.jboss.as.ejb3] (EJB default - 7) WFLYEJB0043: A previous execution of timer [id=15baaed1-d804-48fc-acdb-80ea3e04735f timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 16:27:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:51 IST 2015.
19:46:52,062 WARN  [org.jboss.as.ejb3] (EJB default - 8) WFLYEJB0043: A previous execution of timer [id=fc285ef2-c7a1-4a2e-af57-d320c769b445 timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 23:00:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:52 IST 2015.
19:46:52,218 WARN  [org.jboss.as.ejb3] (EJB default - 9) WFLYEJB0043: A previous execution of timer [id=15baaed1-d804-48fc-acdb-80ea3e04735f timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 16:28:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:52 IST 2015.
19:46:52,328 WARN  [org.jboss.as.ejb3] (EJB default - 10) WFLYEJB0043: A previous execution of timer [id=fc285ef2-c7a1-4a2e-af57-d320c769b445 timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 23:05:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:52 IST 2015.
19:46:52,390 WARN  [org.jboss.as.ejb3] (EJB default - 3) WFLYEJB0043: A previous execution of timer [id=15baaed1-d804-48fc-acdb-80ea3e04735f timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 16:29:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:52 IST 2015.
19:46:52,453 WARN  [org.jboss.as.ejb3] (EJB default - 4) WFLYEJB0043: A previous execution of timer [id=fc285ef2-c7a1-4a2e-af57-d320c769b445 timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 23:10:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:52 IST 2015.
19:46:52,484 WARN  [org.jboss.as.ejb3] (EJB default - 5) WFLYEJB0043: A previous execution of timer [id=15baaed1-d804-48fc-acdb-80ea3e04735f timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 16:30:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:52 IST 2015.
19:46:52,531 WARN  [org.jboss.as.ejb3] (EJB default - 6) WFLYEJB0043: A previous execution of timer [id=fc285ef2-c7a1-4a2e-af57-d320c769b445 timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 23:15:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:52 IST 2015.
19:46:52,593 WARN  [org.jboss.as.ejb3] (EJB default - 7) WFLYEJB0043: A previous execution of timer [id=15baaed1-d804-48fc-acdb-80ea3e04735f timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 16:31:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:52 IST 2015.
19:46:52,687 WARN  [org.jboss.as.ejb3] (EJB default - 8) WFLYEJB0043: A previous execution of timer [id=fc285ef2-c7a1-4a2e-af57-d320c769b445 timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 23:20:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:52 IST 2015.
19:46:52,781 WARN  [org.jboss.as.ejb3] (EJB default - 9) WFLYEJB0043: A previous execution of timer [id=15baaed1-d804-48fc-acdb-80ea3e04735f timedObjectId=WildFly.WildFly-ejb.BackgroundJobManager auto-timer?:true persistent?:true timerService=org.jboss.as.ejb3.timerservice.TimerServiceImpl@9e86f initialExpiration=null intervalDuration(in milli sec)=0 nextExpiration=Fri Dec 11 16:32:00 IST 2015 timerState=IN_TIMEOUT info=null] is still in progress, skipping this overlapping scheduled execution at: Sat Dec 12 19:46:52 IST 2015.

定时器服务定义standalone-full-ha.xml如下。

<timer-service thread-pool-name="default" default-data-store="clustered-store">
    <data-stores>
        <database-data-store name="clustered-store" datasource-jndi-name="java:jboss/datasources/projectXADatasource" database="mysql" partition="timer"/>
    </data-stores>
</timer-service>

当这些计时器被持久化到文件系统而不是数据库时，这些警告也会出现，无论应用程序是部署在集群 ( standalone-full-ha.xml) 还是非集群 ( standalone-full.xml) 环境中。

我会定期清除所有内容standalone/data（除了已部署的 JDBC 驱动程序和自定义内容），standalone/deployments并standalone/tmp在必要时清除。计时器的症状不再standalone/data像以前那样可用，当时计时器最初被持久化到文件系统中。

有解决办法吗？

有一个问题，但我对给出的答案不满意（对不起）。此外，这个问题使用 JBoss EAP 6.4 以及为什么在应用程序服务器中使用 EJB 时出现标签对我来说是个谜。

更新 ：

该问题在 WildFly 10.0.0 最终版中仍然存在。

4

2 回答 2

6

这是一个公认的错误。请参阅https://issues.jboss.org/browse/WFLY-6561。

该错误也已应用于 JBoss 7： https ://issues.jboss.org/browse/JBEAP-4442

于 2016-05-02T15:52:29.997 回答
0

我们在启动时收到了这个“警告”，它似乎scheduledTimeout无论如何都成功地执行了该方法。这里并没有真正的错误，特别是因为注释persistent上的属性默认为. 在服务器持续关闭一段时间后，在启动期间（开发中）会出现此消息（因此错过了如果服务器在线会发生的超时事件）。此问题的其他答案也可能有效，但如果忽略此功能的正确功能，请在此处注意这一点。@Scheduletrue

基本上，如果您认为这是一个问题，请重新评估您是否希望您的@Schedule定时事件重播服务器离线时错过的所有事件。如果不是，则将persistent属性设置false为注释中。

于 2017-12-13T20:57:31.340 回答