dongjinleekr commented on a change in pull request #7898:
URL: https://github.com/apache/kafka/pull/7898#discussion_r829774103



##########
File path: 
streams/src/test/java/org/apache/kafka/streams/kstream/internals/KStreamSlidingWindowAggregateTest.java
##########
@@ -715,19 +713,13 @@ public void shouldLogAndMeterWhenSkippingNullKey() {
                 .aggregate(MockInitializer.STRING_INIT, 
MockAggregator.toStringInstance("+"), Materialized.<String, String, 
WindowStore<Bytes, 
byte[]>>as("topic1-Canonicalized").withValueSerde(Serdes.String()));
 
         props.setProperty(StreamsConfig.BUILT_IN_METRICS_VERSION_CONFIG, 
builtInMetricsVersion);
-
-        try (final LogCaptureAppender appender = 
LogCaptureAppender.createAndRegister(KStreamSlidingWindowAggregate.class);
+        try (final LogCaptureContext logCaptureContext = 
LogCaptureContext.create();
              final TopologyTestDriver driver = new 
TopologyTestDriver(builder.build(), props)) {
+            logCaptureContext.setLatch(1);

Review comment:
       Oh, `await` is just a debris of old approach; it is not called anymore. 
So removed, and the documentation on `setLatch` was added instead.




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