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() {
//...
}
//...
}
在服务器启动时以及在重新部署应用程序时会发出一些警告，如下所示（仅是其中的一些）。
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.
计时器服务的定义standalone-full-ha.xml如下。
@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() {
//...
}
//...
}
当这些计时器代替数据库持久保存到文件系统时，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，这些警告也会出现。
我经常冲洗出的所有内容standalone/data（除了部署JDBC驱动程序和自定义的内容），standalone/deployments并standalone/tmp在有需要时。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保存到文件系统中。
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，该问题使用JBoss EAP 6.4，为什么在应用程序服务器中使用EJB时在其中显示标签弹簧是一个谜。
更新：
该问题在WildFly 10.0.0 final中仍然存在。
这是一个公认的错误。参见https://issues.jboss.org/browse/WFLY-6561。
该错误也已应用于JBoss 7：https： //issues.jboss.org/browse/JBEAP-4442
京公网安备 11010802040832号 | 京ICP备19059560号-6 