[GitHub] [nifi] aramatev edited a comment on issue #3540: NIFI-6385 Added signal.id penalization

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aramatev edited a comment on issue #3540: NIFI-6385 Added signal.id penalization
URL: https://github.com/apache/nifi/pull/3540#issuecomment-504156835
 
 
   @ijokarumawak is there some kind of limit as to the number of flowfiles or signals that flow through? like 16? 
   
   I have 17 items in the queue and cant pop off the last one off the queue. 
   I enabled logging and looking at the logs I see all the UUIDs show up from position 1-16 in the logs , but never the one in position 17. So it seems like its not being evaluated and that is why its not getting popped off the queue. 
   
   But any amount less than 17 in the queue, i can use PriorityAttributeQueue, and pop off using any signal. so we're close..
   
   To reproduce: Basically I used ${UUID()} to as my signal for 17 flowfiles in the Wait queue, and then trying to Notify with the last signal I see in the queue.
   
   ```
   2019-06-20 15:39:39,450 DEBUG [Timer-Driven Process Thread-5] org.apache.nifi.processors.standard.Wait Wait[id=750f7f2c-016b-1000-907d-5bc1ca764b99] No release signal found for 80dc2e06-f305-4157-b8dc-d9605e416a1a on FlowFile StandardFlowFileRecord[uuid=18c03aed-cf2b-430f-95a4-231fd8cdda6a,claim=,offset=0,name=18c03aed-cf2b-430f-95a4-231fd8cdda6a,size=0] yet
   ```
   

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