[jira] [Created] (NIFI-10815) Processor configuration issue @TriggerWhenEmpty / Default Yield Duration

["Paul Grey (Jira)" <ji...@apache.org>]

Paul Grey created NIFI-10815:
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             Summary: Processor configuration issue @TriggerWhenEmpty / Default Yield Duration
                 Key: NIFI-10815
                 URL: https://issues.apache.org/jira/browse/NIFI-10815
             Project: Apache NiFi
          Issue Type: Bug
            Reporter: Paul Grey


While testing a custom processor with the annotation `TriggerWhenEmpty`, noted an issue with the scheduling of the processor.

The processor setting `Yield Duration` defaults in the UI to `1 sec`.  The expectation of the `onTrigger()` method is that, if the API `ProcessContext.yield()` is called, the processor should not be scheduled for the amount of time specified in Yield Duration.  

On adding the custom processor to the canvas and starting it, the processor is scheduled continuously.  When the processor is stopped and Yield Duration is edited, starting the processor results in Yield Duration being honored.  Reverting the edit (to set Yield Duration to the default) is also honored.

It is as if the default Yield Duration setting is ignored when the setting has never been set.
 



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