5 Replies Latest reply on Feb 14, 2010 11:09 AM by zilet

    Seam Quartz jobs stops running after some time

    zilet Jun 18, 2009 11:26 PM

      Hi,


         I have experienced a weird problem with seam and quartz. Quartz is running in a RAM JobStore mode and configured using Cron expression. There are 2 shcheduled tasks. One is executing everyday during the night and other every day from 8-20h every 4 minutes.


      After some time (couple of weeks) the jobs stopped. There are no errors and nothing in log related to this.
      At first this was ignored but it happened again.


      Any ideas?

        • 1. Re: Seam Quartz jobs stops running after some time
          kapitanpetko
          kapitanpetko Jun 19, 2009 4:11 AM (in response to zilet)

          Even if there is an exception somewhere, it might be swallowed by the container. Try installing a custom
          exception handler (forum parser doesn't like links with a hash inside...):


          http://docs.jboss.com/seam/2.1.2/reference/en-US/html/jms.html#d0e21479



          Another thing you could do is set the Quartz log level to debug or trace to see if your job is being triggered at
          all.

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          • 2. Re: Seam Quartz jobs stops running after some time
            zilet Jun 19, 2009 7:47 AM (in response to zilet)

            As I said the quartz is being triggered and working fine for couple of weeks and then just stops running. Jobs are triggered as 'run forever' and there is no rule when it is going to stop.


            I will go with the fine logging and wait for it to happen again:(


            I was working with quartz for a long time but never experienced this kind of issue. This happened when quartz was run within the seam container.


            Thanks

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            • 3. Re: Seam Quartz jobs stops running after some time
              infinity2heaven
              infinity2heaven Feb 11, 2010 10:16 PM (in response to zilet)

              I had similar issue on our production servers and was hard to debug the problem. It turns out that Quartz had an issue with 1.6.4 release (and we were using older version) where threads die out for a jvm error. It could be possible that threads just died (which is bad). I'm currently using the latest 1.7.1 release and not anticipating any issues.

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              • 4. Re: Seam Quartz jobs stops running after some time
                cash1981
                cash1981 Feb 12, 2010 4:33 PM (in response to zilet)

                Seems its maybe safer to not using in memory but database storage for quartz.

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                • 5. Re: Seam Quartz jobs stops running after some time
                  zilet Feb 14, 2010 11:09 AM (in response to zilet)

                  Well probably but we didn't have the need for rerunning jobs if they failed.


                  And I forgot to reply back on this. After a lot of time trying to figure out what was happening we moved to quartz servlet initialization which works excellent. The class which is invoked by quartz programatically initializes seam context and thats it.


                  Quartz is reading from its xml configuration file and is watching on it so schedulers can be easily redefined at runtime.

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