zhaohaidao commented on a change in pull request #8550:
URL: https://github.com/apache/kafka/pull/8550#discussion_r418813975
##########
File path:
streams/src/test/java/org/apache/kafka/streams/kstream/internals/KStreamRepartitionTest.java
##########
@@ -104,6 +114,54 @@ public void shouldInvokePartitionerWhenSet() {
verify(streamPartitionerMock);
}
+ @Test
+ public void
shouldThrowAnExceptionWhenNumberOfPartitionsOfRepartitionOperationsDoNotMatchWhenJoining()
{
+ final String topicB = "topic-b";
+ final String outputTopic = "topic-output";
+ final String topicBRepartitionedName = "topic-b-scale-up";
+ final String inputTopicRepartitionedName = "input-topic-scale-up";
+ final int topicBNumberOfPartitions = 2;
+ final int inputTopicNumberOfPartitions = 4;
+ final StreamsBuilder builder = new StreamsBuilder();
+
+ final Repartitioned<Integer, String> inputTopicRepartitioned =
Repartitioned
+ .<Integer, String>as(inputTopicRepartitionedName)
+ .withNumberOfPartitions(inputTopicNumberOfPartitions);
+
+ final Repartitioned<Integer, String> topicBRepartitioned =
Repartitioned
+ .<Integer, String>as(topicBRepartitionedName)
+ .withNumberOfPartitions(topicBNumberOfPartitions);
+
+ final KStream<Integer, String> topicBStream = builder
+ .stream(topicB, Consumed.with(Serdes.Integer(),
Serdes.String()))
+ .repartition(topicBRepartitioned);
+
+ builder.stream(inputTopic, Consumed.with(Serdes.Integer(),
Serdes.String()))
+ .repartition(inputTopicRepartitioned)
+ .join(topicBStream, (value1, value2) -> value2,
JoinWindows.of(Duration.ofSeconds(10)))
+ .to(outputTopic);
+
+ final Map<String, Integer> repartitionTopicsWithNumOfPartitions =
Utils.mkMap(
+ Utils.mkEntry(toRepartitionTopicName(topicBRepartitionedName),
topicBNumberOfPartitions),
+
Utils.mkEntry(toRepartitionTopicName(inputTopicRepartitionedName),
inputTopicNumberOfPartitions)
+ );
+
+ try {
+ builder.build(props);
+ Assert.fail();
+ } catch (final TopologyException t) {
Review comment:
Done
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