fapaul commented on a change in pull request #18009:
URL: https://github.com/apache/flink/pull/18009#discussion_r764791259



##########
File path: 
flink-connectors/flink-connector-kafka/src/test/java/org/apache/flink/connector/kafka/sink/FlinkKafkaInternalProducerITCase.java
##########
@@ -88,20 +92,45 @@ void testInitTransactionId() {
                     reuse.abortTransaction();
                 }
                 assertNumTransactions(i);
-                assertThat(readRecords(TEST_TOPIC).count(), equalTo(i / 2));
+                assertThat(readRecords(TEST_TOPIC).count()).isEqualTo(i / 2);
             }
         }
     }
 
+    @ParameterizedTest
+    @MethodSource("provideTransactionsFinalizer")
+    void testResetInnerTransactionIfFinalizingTransactionFailed(
+            Consumer<FlinkKafkaInternalProducer<?, ?>> transactionFinalizer) {
+        try (FlinkKafkaInternalProducer<String, String> reuse =
+                new FlinkKafkaInternalProducer<>(getProperties(), "dummy")) {
+            reuse.initTransactions();
+            reuse.beginTransaction();
+            reuse.send(new ProducerRecord<>(TEST_TOPIC, "test-value"));
+            reuse.close();

Review comment:
       I updated the test case to start a second producer which fences the 
first one to fail during committing. PTAL




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