diff --git a/data-prepper-plugins/kafka-plugins/src/main/java/org/opensearch/dataprepper/plugins/kafka/consumer/KafkaSourceCustomConsumer.java b/data-prepper-plugins/kafka-plugins/src/main/java/org/opensearch/dataprepper/plugins/kafka/consumer/KafkaSourceCustomConsumer.java
index e093139b71..2604f4404d 100644
--- a/data-prepper-plugins/kafka-plugins/src/main/java/org/opensearch/dataprepper/plugins/kafka/consumer/KafkaSourceCustomConsumer.java
+++ b/data-prepper-plugins/kafka-plugins/src/main/java/org/opensearch/dataprepper/plugins/kafka/consumer/KafkaSourceCustomConsumer.java
@@ -121,6 +121,10 @@ public KafkaSourceCustomConsumer(final KafkaConsumer consumer,
         this.errLogRateLimiter = new LogRateLimiter(2, System.currentTimeMillis());
     }
 
+    KafkaTopicMetrics getTopicMetrics() {
+        return topicMetrics;
+    }
+
     private long getCurrentTimeNanos() {
         Instant now = Instant.now();
         return now.getEpochSecond()*1000000000+now.getNano();
@@ -501,4 +505,4 @@ final String getTopicPartitionOffset(final Map<TopicPartition, Long> offsetMap,
         final Long offset = offsetMap.get(topicPartition);
         return Objects.isNull(offset) ? "-" : offset.toString();
     }
-}
\ No newline at end of file
+}
diff --git a/data-prepper-plugins/kafka-plugins/src/test/java/org/opensearch/dataprepper/plugins/kafka/consumer/KafkaSourceCustomConsumerTest.java b/data-prepper-plugins/kafka-plugins/src/test/java/org/opensearch/dataprepper/plugins/kafka/consumer/KafkaSourceCustomConsumerTest.java
index 43312becfa..1e61146e55 100644
--- a/data-prepper-plugins/kafka-plugins/src/test/java/org/opensearch/dataprepper/plugins/kafka/consumer/KafkaSourceCustomConsumerTest.java
+++ b/data-prepper-plugins/kafka-plugins/src/test/java/org/opensearch/dataprepper/plugins/kafka/consumer/KafkaSourceCustomConsumerTest.java
@@ -49,6 +49,8 @@
 import java.util.concurrent.Executors;
 import java.util.concurrent.atomic.AtomicBoolean;
 
+import static org.awaitility.Awaitility.await;
+
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.hasEntry;
 import static org.junit.jupiter.api.Assertions.assertTrue;
@@ -97,16 +99,25 @@ public class KafkaSourceCustomConsumerTest {
     private final int testPartition = 0;
     private final int testJsonPartition = 1;
     private Counter counter;
+    @Mock
+    private Counter posCounter;
+    @Mock
+    private Counter negCounter;
+    private Duration delayTime;
+    private double posCount;
+    private double negCount;
 
     @BeforeEach
     public void setUp() {
+        delayTime = Duration.ofMillis(10);
         kafkaConsumer = mock(KafkaConsumer.class);
         topicMetrics = mock(KafkaTopicMetrics.class);
         counter = mock(Counter.class);
+        posCounter = mock(Counter.class);
+        negCounter = mock(Counter.class);
         topicConfig = mock(TopicConfig.class);
-        when(topicMetrics.getNumberOfPositiveAcknowledgements()).thenReturn(counter);
-        when(topicMetrics.getNumberOfNegativeAcknowledgements()).thenReturn(counter);
-        when(topicMetrics.getNumberOfNegativeAcknowledgements()).thenReturn(counter);
+        when(topicMetrics.getNumberOfPositiveAcknowledgements()).thenReturn(posCounter);
+        when(topicMetrics.getNumberOfNegativeAcknowledgements()).thenReturn(negCounter);
         when(topicMetrics.getNumberOfRecordsCommitted()).thenReturn(counter);
         when(topicMetrics.getNumberOfDeserializationErrors()).thenReturn(counter);
         when(topicConfig.getThreadWaitingTime()).thenReturn(Duration.ofSeconds(1));
@@ -114,7 +125,16 @@ public void setUp() {
         when(topicConfig.getAutoCommit()).thenReturn(false);
         when(kafkaConsumer.committed(any(TopicPartition.class))).thenReturn(null);
 
-        doAnswer((i)-> {return null;}).when(counter).increment();
+        doAnswer((i)-> {
+            posCount += 1.0;
+            return null;
+        }).when(posCounter).increment();
+        doAnswer((i)-> {
+            negCount += 1.0;
+            return null;
+        }).when(negCounter).increment();
+        doAnswer((i)-> {return posCount;}).when(posCounter).count();
+        doAnswer((i)-> {return negCount;}).when(negCounter).count();
         callbackExecutor = Executors.newFixedThreadPool(2); 
         acknowledgementSetManager = new DefaultAcknowledgementSetManager(callbackExecutor, Duration.ofMillis(2000));
 
@@ -207,9 +227,10 @@ public void testPlainTextConsumeRecordsWithAcknowledgements() throws Interrupted
             event.getEventHandle().release(true);
         }
         // Wait for acknowledgement callback function to run
-        try {
-            Thread.sleep(100);
-        } catch (Exception e){}
+        await().atMost(delayTime.plusMillis(5000))
+                .until(() -> {
+                    return consumer.getTopicMetrics().getNumberOfPositiveAcknowledgements().count() == 1.0;
+                });
 
         consumer.processAcknowledgedOffsets();
         offsetsToCommit = consumer.getOffsetsToCommit();
@@ -254,9 +275,10 @@ public void testPlainTextConsumeRecordsWithNegativeAcknowledgements() throws Int
             event.getEventHandle().release(false);
         }
         // Wait for acknowledgement callback function to run
-        try {
-            Thread.sleep(100);
-        } catch (Exception e){}
+        await().atMost(delayTime.plusMillis(5000))
+                .until(() -> {
+                    return consumer.getTopicMetrics().getNumberOfNegativeAcknowledgements().count() == 1.0;
+                });
 
         consumer.processAcknowledgedOffsets();
         offsetsToCommit = consumer.getOffsetsToCommit();