I am using Quartz scheduler to execute jobs. But while trying to schedule jobs for a future time, the jobs get triggered at the right time and immediately goes to failed state without displaying anything in the scheduler logs.
Could not find the root cause for this. But the issue was solved by pointing to a freshly created Quartz database.
The reason could be that the database might have got corrupted in some way.
Related
There are some jobs scheduled using any trigger either SimpleTrigger or CronTrigger, now want to unschedule and delete the jobs. The job can be in running or already completed its execution state. If a unschedule or already executed job is deleted then there won't be any worst impact but what happen to the running job, if unschedule using unscheduleJob() or deleted directly by deleteJob() methods of the Quartz?
And if the running job is being halted in-between when the unscheduleJob() or deleteJob() is called upon then is there any way to let the job to complete it's current execution before unscheduling or deleting to avoid any malfunctioning or bad data?
Tried to check the conflicting jobs and make use of SchedulerListener also but didn't get any information.
Thanks in Advance!!!
I am new to spring-batch, got few questions:-
I have got a question about the restart. As per documentation, the restart feature is enabled by default. What I am not clear is do I need to do any extra code for a restart? If so, I am thinking of adding a scheduled job that looks at failed processes and restarts them?
I understand spring-batch-admin is deprecated. However, we cannot use spring-cloud-data-flow right now. Is there any other alternative to monitor and restart jobs on demand?
The restart that you mention only means if a job is restartable or not .It doesn't mean Spring Batch will help you to restart the failed job automatically.
Instead, it provides the following building blocks for developers for achieving this task on their own :
JobExplorer to find out the id of the job execution that you want to restart
JobOperator to restart a job execution given a job execution id
Also , a restartable job can only be restarted if its status is FAILED. So if you want to restart a running job that was stop running because of the server breakdown , you have to first find out this running job and update its job execution status and all of its task execution status to FAILED first in order to restart it. (See this for more information). One of the solution is to implement a SmartLifecycle which use the above building blocks to achieve this goal.
My requirement is:
Workflow should run daily at 2pm. Workflow has been scheduled to run at 2pm
We have lookup on master tables. Records with IDs that are not present in the master tables will get rejected.
These new IDs have to be loaded into the master tables manually and then the workflow has to be re-run.
Daily the same thing happens.
My question is -
Is it possible to schedule a workflow to run twice every day(one for the first run, the other to run after the master table is updated)?
If No, can I manually start a scheduled workflow? Will it make the workflow unscheduled?
Please, Can any one help me with this?
Informatica's scheduler is a weak spot. I guess using two copies of the same workflow with different schedules would be the easiest solution.
Got a solution for my problem.
Once a workflow is scheduled, even if a particular session has to be re-run manually, whole workflow has be run from the workflow manager.
If that particular session is run manually, scheduling will be gone.
So always run the workflow instead of a session, so that scheduling will remain.
We've got a problem with stuck triggers in an application using Quartz Scheduler version 1.8.6 when jobs do not complete.
For example, we have jobs with ssh calls or database queries. If these jobs hang (because the ssh call does not terminate or the select statement has a table lock), then I cannot get the jobs to trigger any more. The triggers are stuck until I forcibly restart the scheduler.
I have tried to Scheduler.interrupt(trigger) and Scheduler.rescheduleTrigger(). I have tried removing the trigger and recreating it. I have removed the job and recreated it.
The result is the same: I can restart the job, but the trigger hangs and is not run again.
Please disregard this question. I had problems with my installation which were unrelated to Quartz.
Scheduler.interrupt() is the correct method, and is working perfectly for me now.
I am working to migrate from Quartz 1.6 to 2.1 and use a JDBCJobStore. Previously, the the jobs were loaded via an xml file when the webapp started. The scheduler is now running using the JDBCJobStore but I don't understand how to add the jobs to the database which need to run on an ongoing basis (not one-off jobs).
My first thought is to create a servlet which runs on startup which adds the jobs to the database. But my concern is that this will be executed every time I need to restart the app and the jobs will get duplicated.
Thanks,
steve
The Jobs wont disappear from the database when you do a restart. So within your servlet, when it starts up before adding any jobs check to see if they already exist. When you create your jobs you can give them identities. Using the identities and some quartz methods you check if they already exist.
It sounds like the memory based scheduler is a better fit for these fixed jobs. You can create more than one scheduler, one memory, one JDBC if that makes sense for your application.