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How to control non-reporting Quartz node tolerance


Scheduling Dependent Jobs in Quartz.NetHow to configure Quartz to handle cycles, periods and intervalsHow quartz detect nodes failsHow to gracefully handle thousands of Quartz misfires?How to orchestrate a clustered Quartz jobScheduling using QuartzQuartz. JobStoreTX. The trigger is fired by two nodes simultaneouslyHow to run missed jobs in Quartz?Creating Quartz Triggers in a Clustered EnvironmentQuart.Net is Sometimes Running Overlapping Tasks






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The Scheduler_State table has a Last_Checkin_Time column. I believe Quartz uses this to decide if a node has gone down. Is there a way to configure the tolerance of this check?



What I am seeing is that my scheduler will occasionally not checkin in time, which causes another scheduler instance to launch the same task that the first node already had running, even though the original instance has not actually gone down and continues to run the task. This results in duplicate instances of a task running at once. If Quartz is only allowing a second or two of tolerance from the expected checkin time, I am hoping I can make this a wider period of time before assuming any node has gone down.



This behavior is very hard to capture, but it is definitely happening at least once in every 24 hour period in my test environment.










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    0















    The Scheduler_State table has a Last_Checkin_Time column. I believe Quartz uses this to decide if a node has gone down. Is there a way to configure the tolerance of this check?



    What I am seeing is that my scheduler will occasionally not checkin in time, which causes another scheduler instance to launch the same task that the first node already had running, even though the original instance has not actually gone down and continues to run the task. This results in duplicate instances of a task running at once. If Quartz is only allowing a second or two of tolerance from the expected checkin time, I am hoping I can make this a wider period of time before assuming any node has gone down.



    This behavior is very hard to capture, but it is definitely happening at least once in every 24 hour period in my test environment.










    share|improve this question
























      0












      0








      0








      The Scheduler_State table has a Last_Checkin_Time column. I believe Quartz uses this to decide if a node has gone down. Is there a way to configure the tolerance of this check?



      What I am seeing is that my scheduler will occasionally not checkin in time, which causes another scheduler instance to launch the same task that the first node already had running, even though the original instance has not actually gone down and continues to run the task. This results in duplicate instances of a task running at once. If Quartz is only allowing a second or two of tolerance from the expected checkin time, I am hoping I can make this a wider period of time before assuming any node has gone down.



      This behavior is very hard to capture, but it is definitely happening at least once in every 24 hour period in my test environment.










      share|improve this question














      The Scheduler_State table has a Last_Checkin_Time column. I believe Quartz uses this to decide if a node has gone down. Is there a way to configure the tolerance of this check?



      What I am seeing is that my scheduler will occasionally not checkin in time, which causes another scheduler instance to launch the same task that the first node already had running, even though the original instance has not actually gone down and continues to run the task. This results in duplicate instances of a task running at once. If Quartz is only allowing a second or two of tolerance from the expected checkin time, I am hoping I can make this a wider period of time before assuming any node has gone down.



      This behavior is very hard to capture, but it is definitely happening at least once in every 24 hour period in my test environment.







      quartz-scheduler quartz.net






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      share|improve this question










      asked Mar 25 at 14:02









      EricEric

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