Quartz Stateful mergedJobDataMap doesn't work

[porthis77]

Hi peeps, I got this quartz stateful job executed every second. Seems the mergedJobDataMap got reset for some reason that it doesn't retain the input to the map.

I have spent a whole day to sort this out. Anyone can help?

// this is the output
jobDataMap=org.quartz.JobDataMap@fb19573b
jobDataMap.mykey=null
jobDataMap.mykey=thisismykey
jobDataMap=org.quartz.JobDataMap@fb19573b
jobDataMap.mykey=null
jobDataMap.mykey=thisismykey


// code
public class QuartzRouteBuilder extends RouteBuilder{

        @Override
        public void configure() throws Exception {

                from("quartz://myGroup/myTimerName?cron=0/1 * * * * %3F&stateful=true").process(new MyProcessor());
               
        }
       
        private class MyProcessor implements Processor{

                @Override
                public void process(Exchange exchange) throws Exception {
                        // TODO Auto-generated method stub
                        JobDataMap jobDataMap = exchange.getIn().getHeader(
                                        "mergedJobDataMap", JobDataMap.class);
                        System.out.println("jobDataMap="+jobDataMap);  
                       
                        System.out.println("jobDataMap.mykey="+jobDataMap.get("mykey"));
                        jobDataMap.put("mykey", "thisismykey");
                        System.out.println("jobDataMap.mykey="+jobDataMap.get("mykey"));
                }
               
        }

}