Job scheduling Framework Quartz Learning Notes (v)--What about the missing tasks?

I do not know when you use the quartz is not encountered in such a situation:

Triggers are set to fire every 3 seconds, but the work takes 10 seconds to execute. Therefore, the trigger has missed the trigger before the end of a task execution

How do we deal with this situation, let's study ...

Or do you want to paste the code first:

Job class: Statefuldumbjob.java[Java]  View plain copy import java.text.simpledateformat;   import java.util.calendar;    import org.quartz.disallowconcurrentexecution;   import org.quartz.job;   import org.quartz.jobdatamap;   import org.quartz.jobexecutioncontext;   Import  org.quartz.JobExecutionException;   import org.quartz.persistjobdataafterexecution;       @PersistJobDataAfterExecution    @DisallowConcurrentExecution    Public  class StatefulDumbJob implements Job {           //  static constants, as tasks between calls, keep the Data key (key)        // num_executions, the saved count increments by 1 each time        // execution_delay, the task in the execution of the middle sleep time. In this case, excessive sleep time leads to missed triggers        public static final string num_ executions =  "Numexecutions";      public static final String EXECUTION_DELAY =  " Executiondelay ";           @Override         Public void execute (jobexecutioncontext context)                 throws JobExecutionException {              //  time of task execution             simpledateformat dateformat = new simpledateformat (                     "YYYY-MM-DD HH: Mm:ss ");           String jobRunTime =  Dateformat.format (Calendar.getinstance (). GetTime ());               system.err.println ("---" + context.getjobdetail (). Getkey () getName ()  + "   in   : ["                    +  jobruntime +  "]  carried out!!");               //  Task Execution count   cumulative            jobdatamap map = context.getjobdetail (). Getjobdatamap ();           int executeCount =  0;           if  (Map.containskey (num_executions))  {                executeCount =  Map.getint (num_executions);           }            executeCount++;            map.put (num_executions, executecount);               //  sleep time:  reset value &nbsp by scheduling class; This example is   sleep 10s            long delay = 5000l;            if  (Map.containskey (execution_delay))  {                delay = map.getlong (execution_delay);            }               try {                Thread.Sleep (delay);           } catch  (Exception  ignore)  {           }