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${ noResults }
src-kafka/streams
Guozhang Wang
7436d28a24
The issue of transiently having duplicates is due to the bad design of the left join itself: in order to ignore the partial joined results such as `A:null`, it lets the producer to potentially send twice to source stream one and rely on all the following conditions to be true in order to pass the test: 1. `receiveMessages` happen to have fetched all the produced results and have committed offsets. 2. streams app happen to have completed sending all result data. 3. consumer used in `receiveMessages` will complete getting all messages in a single poll(). If any of the above is not true, the test fails. Fixed this test to add a filter right after left join to filter out partial joined results. Minor cleanup on integration test utils. Author: Guozhang Wang <wangguoz@gmail.com> Reviewers: Damian Guy, Ewen Cheslack-Postava Closes #2485 from guozhangwang/K3896-duplicate-join-results |
8 years ago | |
|---|---|---|
| .. | ||
| examples/src/main/java/org/apache/kafka/streams/examples | MINOR: Fix typo in WordCountProcessorDemo | 8 years ago |
| src | KAFKA-3896: Fix KStream-KStream leftJoin in RepartitionIntegrationTest | 8 years ago |