[GitHub] [kafka] pierDipi commented on a diff in pull request #13325: KAFKA-14771: Include threads info in ConcurrentModificationException message

["pierDipi (via GitHub)" <gi...@apache.org>]

pierDipi commented on code in PR #13325:
URL: https://github.com/apache/kafka/pull/13325#discussion_r1155728488


##########
clients/src/main/java/org/apache/kafka/clients/consumer/KafkaConsumer.java:
##########
@@ -2547,9 +2547,13 @@ private void acquireAndEnsureOpen() {
      * @throws ConcurrentModificationException if another thread already has the lock
      */
     private void acquire() {
-        long threadId = Thread.currentThread().getId();
+        final Thread thread = Thread.currentThread();
+        final long threadId = thread.getId();
         if (threadId != currentThread.get() && !currentThread.compareAndSet(NO_CURRENT_THREAD, threadId))
-            throw new ConcurrentModificationException("KafkaConsumer is not safe for multi-threaded access");
+            throw new ConcurrentModificationException("KafkaConsumer is not safe for multi-threaded access. " +
+                    "currentThread(name: " + thread.getName() + ", id: " + thread.getId() + ")" +

Review Comment:
   ```suggestion
                       "currentThread(name: " + thread.getName() + ", id: " + threadId + ")" +
   ```



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