markobean commented on code in PR #6638:
URL: https://github.com/apache/nifi/pull/6638#discussion_r1023357713


##########
nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/main/java/org/apache/nifi/controller/serialization/VersionedFlowSynchronizer.java:
##########
@@ -378,6 +378,7 @@ private void synchronizeFlow(final FlowController 
controller, final DataFlow exi
 
             if (versionedFlow != null) {
                 
controller.setMaxTimerDrivenThreadCount(versionedFlow.getMaxTimerDrivenThreadCount());
+                
controller.setMaxEventDrivenThreadCount(versionedFlow.getMaxTimerDrivenThreadCount());

Review Comment:
   It does feel a little hacky. If you don't set the value to 1 when declaring 
the variable, the default value of an int is 0. So you could use this in 
VersionedDataflow.java (line 58)
   
   ```
       public int getMaxEventDrivenThreadCount() {
           return maxEventDrivenThreadCount < 1 ? 1 : maxEventDrivenThreadCount;
       }
       }
   ```
   Or even better:
   
   ```
       public int getMaxEventDrivenThreadCount() {
           return maxEventDrivenThreadCount < 1 ? 
DEFAULT_MAX_EVENT_DRIVEN_THREAD_COUNT : maxEventDrivenThreadCount;
       }
   ```
   
   .. and setup the proper `private static final` constant.



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