chia7712 commented on code in PR #19798:
URL: https://github.com/apache/kafka/pull/19798#discussion_r2106226720


##########
server-common/src/main/java/org/apache/kafka/server/purgatory/DelayedOperation.java:
##########
@@ -41,19 +40,10 @@ public abstract class DelayedOperation extends TimerTask {
 
     private volatile boolean completed = false;
 
-    protected final Lock lock;
-
-    public DelayedOperation(long delayMs, Optional<Lock> lockOpt) {
-        this(delayMs, lockOpt.orElse(new ReentrantLock()));
-    }
+    protected final Lock lock = new ReentrantLock();

Review Comment:
   Could you please change the type from `Lock` to `ReentrantLock`? This class 
requires some features of `ReentrantLock`.



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