ableegoldman commented on a change in pull request #9648:
URL: https://github.com/apache/kafka/pull/9648#discussion_r529109355
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File path:
streams/src/test/java/org/apache/kafka/streams/integration/RegexSourceIntegrationTest.java
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@@ -198,9 +200,16 @@ public void
testRegexRecordsAreProcessedAfterReassignment() throws Exception {
final StreamsBuilder builder = new StreamsBuilder();
final KStream<String, String> pattern1Stream =
builder.stream(Pattern.compile("TEST-TOPIC-\\d"));
- pattern1Stream.to(outputTopic, Produced.with(Serdes.String(),
Serdes.String()));
+ final KStream<String, String> otherStream =
builder.stream(Pattern.compile("not-a-match"));
Review comment:
We didn't catch the bug in this test for two reasons: it has only one
subtopology, and it didn't wait for Streams to get to RUNNING before it created
the new topic. So we weren't even covering the "update source topics" code path
since all topics existed by the first assignment
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