XComp commented on code in PR #21247:
URL: https://github.com/apache/flink/pull/21247#discussion_r1017896227


##########
flink-connectors/flink-connector-kafka/src/test/java/org/apache/flink/connector/kafka/source/reader/KafkaSourceReaderTest.java:
##########
@@ -88,8 +88,11 @@ public class KafkaSourceReaderTest extends 
SourceReaderTestBase<KafkaPartitionSp
     public static void setup() throws Throwable {
         KafkaSourceTestEnv.setup();
         try (AdminClient adminClient = KafkaSourceTestEnv.getAdminClient()) {
-            adminClient.createTopics(
-                    Collections.singleton(new NewTopic(TOPIC, NUM_PARTITIONS, 
(short) 1)));
+            adminClient
+                    .createTopics(
+                            Collections.singleton(new NewTopic(TOPIC, 
NUM_PARTITIONS, (short) 1)))
+                    .all()
+                    .get();
             // Use the admin client to trigger the creation of internal 
__consumer_offsets topic.
             // This makes sure that we won't see unavailable coordinator in 
the tests.
             waitUtil(

Review Comment:
   fair enough - I just wanted to bring it up at least once. I'm not in a 
position to judge here. :-) But it sounds reasonable to keep it to be on the 
safe side.



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