liwenhe1993 opened a new issue #2255: [BUG] taskProps.getScheduleTime() may be 
null, but there is no check if it is null or not
URL: https://github.com/apache/incubator-dolphinscheduler/issues/2255
 
 
   ```java
       if (paramsMap != null) {
         String dateTime = DateUtils.format(taskProps.getScheduleTime(), 
Constants.PARAMETER_FORMAT_TIME);
         Property p = new Property();
         p.setValue(dateTime);
         p.setProp(Constants.PARAMETER_SHECDULE_TIME);
         paramsMap.put(Constants.PARAMETER_SHECDULE_TIME, p);
         script = ParameterUtils.convertParameterPlaceholders2(script, 
ParamUtils.convert(paramsMap));
       }
   ```
   
   `taskProps.getScheduleTime()` may be `null`, so we need to check if it is 
null or not.
   
   I will change as follows:
   ```java
       // new
       // replace variable TIME with $[YYYYmmddd...] in shell file when history 
run job and batch complement job
       if (paramsMap != null) {
         if (taskProps.getScheduleTime() != null) {
           String dateTime = DateUtils.format(taskProps.getScheduleTime(), 
Constants.PARAMETER_FORMAT_TIME);
           Property p = new Property();
           p.setValue(dateTime);
           p.setProp(Constants.PARAMETER_SHECDULE_TIME);
           paramsMap.put(Constants.PARAMETER_SHECDULE_TIME, p);
         }
         script = ParameterUtils.convertParameterPlaceholders2(script, 
ParamUtils.convert(paramsMap));
       }
   ```
   

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