kirktrue commented on code in PR #15438:
URL: https://github.com/apache/kafka/pull/15438#discussion_r1506928829


##########
clients/src/main/java/org/apache/kafka/clients/consumer/internals/events/ApplicationEvent.java:
##########
@@ -32,36 +36,42 @@ public enum Type {
 
     private final Type type;
 
+    /**
+     * This identifies a particular event. It is used to disambiguate events 
via {@link #hashCode()} and
+     * {@link #equals(Object)} and can be used in log messages when debugging.
+     */
+    private final Uuid id;
+
     protected ApplicationEvent(Type type) {
         this.type = Objects.requireNonNull(type);
+        this.id = Uuid.randomUuid();
     }
 
     public Type type() {
         return type;
     }
 
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-
-        ApplicationEvent that = (ApplicationEvent) o;
+    public Uuid id() {
+        return id;
+    }
 
-        return type == that.type;
+    @Override
+    public final boolean equals(Object o) {

Review Comment:
   I made a change to `equals()` to compare the `type` and `id`.



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