showuon commented on a change in pull request #11124:
URL: https://github.com/apache/kafka/pull/11124#discussion_r679682334
##########
File path:
streams/src/test/java/org/apache/kafka/streams/kstream/internals/KStreamSlidingWindowAggregateTest.java
##########
@@ -100,17 +99,78 @@
private final Properties props =
StreamsTestUtils.getStreamsConfig(Serdes.String(), Serdes.String());
private final String threadId = Thread.currentThread().getName();
+ private final String topic = "topic";
+ private final String defaultInOrderName = "InOrder";
+ private final String defaultReverseName = "Reverse";
+ private final long defaultWindowSize = 10L;
+ private final long defaultRetentionPeriod = 5000L;
+
+ private WindowBytesStoreSupplier getStoreSupplier(final boolean
inOrderIterator,
+ final String inOrderName,
+ final String reverseName,
+ final long windowSize) {
+ return inOrderIterator
+ ? new InOrderMemoryWindowStoreSupplier(inOrderName,
defaultRetentionPeriod, windowSize, false)
+ : Stores.inMemoryWindowStore(reverseName,
ofMillis(defaultRetentionPeriod), ofMillis(windowSize), false);
+ }
+
+ @SuppressWarnings("unchecked")
+ @Test
+ public void testAggregateSmallInputWithZeroTimeDifference() {
+ final StreamsBuilder builder = new StreamsBuilder();
+
+ // create a window store supplier with window size of 0
+ final WindowBytesStoreSupplier storeSupplier =
getStoreSupplier(inOrderIterator, defaultInOrderName, defaultReverseName, 0L);
Review comment:
We can create window store with window size of 0 now.
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