Transport small fix

Author: Biatbe13

simulator/src/main/java/byzzbench/simulator/transport/Transport.java

@@ -364,7 +364,8 @@ public synchronized void dropEvent(long eventId) {
         }
 
         if (e.getStatus() != Event.Status.QUEUED) {
-            throw new IllegalArgumentException("Event not found or not in QUEUED state");
+            return;
+            //throw new IllegalArgumentException("Event not found or not in QUEUED state");
         }
 
         e.setStatus(Event.Status.DROPPED);
@@ -403,7 +404,8 @@ public synchronized void applyMutation(long eventId, Fault fault) {
 
         // check if event is not in QUEUED state
         if (e.getStatus() != Event.Status.QUEUED) {
-            throw new IllegalArgumentException("Message not found or not in QUEUED state");
+            return;
+            //throw new IllegalArgumentException("Event not found or not in QUEUED state");
         }
 
         // check it is a message event!

simulator/src/main/resources/application.yml

@@ -23,7 +23,7 @@ byzzbench:
 
   scheduler:
     id: "byzzfuzz" # The ID of the scheduler to use
-    executionMode: sync # async (default, any message delivered) or sync (communication-closure hypothesis, FIFO)
+    executionMode: async # async (default, any message delivered) or sync (communication-closure hypothesis, FIFO)
     maxDropMessages: 10 # Maximum number of messages to drop per scenario
     maxMutateMessages: 10 # Maximum number of messages to mutate per scenario
     deliverTimeoutWeight: 25 # The weight for scheduler to trigger a timeout