Spring scheduled job getting called twice

[shashi]

Hi,

I am trying to use spring (v 3.0.1.RELEASE-A) based scheduler for a scheduler application. I just started using it with a cron expression. However I find that only sometimes the job is called twice.

My spring configuration is

	<task:scheduled-tasks scheduler="jobScheduler">
	    <task:scheduled ref="jobProcessor" method="process" cron="0 0/1 * * * *"/>
	</task:scheduled-tasks>
	<task:scheduler id="jobScheduler" pool-size="1"/>
    <bean id="jobProcessor" class="MyScheduledJobProcessor"/>

To see how the job is getting called I have put few debug sysouts, the MyScheduledJobProcessor class looks like

public class MyScheduledJobProcessor implements JobProcessor{

	public void process() {
		System.out.println("ScheduledJobProcessor called at " + new Date() + " and "+ Thread.currentThread().getId());
	}
}

The output looks like
ScheduledJobProcessor called at Fri Dec 09 03:59:00 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 03:59:59 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:00:00 EST 2011 and 7 // Called twice here
ScheduledJobProcessor called at Fri Dec 09 04:01:00 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:02:00 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:03:00 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:03:59 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:04:00 EST 2011 and 7 // Called twice here
ScheduledJobProcessor called at Fri Dec 09 04:05:00 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:06:00 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:06:59 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:07:00 EST 2011 and 7 // Called twice here
ScheduledJobProcessor called at Fri Dec 09 04:08:00 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:09:00 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:10:00 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:11:00 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:11:59 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:12:00 EST 2011 and 7 // Called twice here
ScheduledJobProcessor called at Fri Dec 09 04:13:00 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:14:00 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:15:00 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:15:59 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:17:00 EST 2011 and 7 // Called twice here
ScheduledJobProcessor called at Fri Dec 09 04:17:59 EST 2011 and 7
ScheduledJobProcessor called at Fri Dec 09 04:18:00 EST 2011 and 7

I am not able to figure out what I did wrong. It's a simple cron job which is supposed to run every minute. Moreover there is no pattern in calling the job twice.

Any help is appreciated!

Shashi

[shashi]

Hi,

It's strange but didn't get any replies for my post. Could somebody please throw some light on the issue I am facing. Probably an issue with my configuration or a bug?

Regards,
Shashi

[schrepfler]

Maybe in the web.xml you've declared two contexts?