Github user radekg commented on the issue: https://github.com/apache/flink/pull/2231 Sure, the problems are the following: - https://github.com/apache/flink/pull/2231/commits/06936d7c5acc0897348019161c9ced4596a0a4dd#diff-aba21cf86694f3f2cd85e2e5e9b04972R305 in 0.9, `consumer.assign` (https://github.com/apache/flink/pull/2231/commits/06936d7c5acc0897348019161c9ced4596a0a4dd#diff-aba21cf86694f3f2cd85e2e5e9b04972R180) takes a `List`, in 0.10 it takes `Collection` - for unit tests: https://github.com/apache/flink/pull/2231/commits/06936d7c5acc0897348019161c9ced4596a0a4dd#diff-ab65f3156ed8820677f3420152b78908R130, if we use 0.9 kafka version with 0.10 client, the concrete client tests fail as they catch wrong exception type in: https://github.com/TheWeatherCompany/flink/blob/06936d7c5acc0897348019161c9ced4596a0a4dd/flink-streaming-connectors/flink-connector-kafka-base/src/test/java/org/apache/flink/streaming/connectors/kafka/KafkaConsumerTestBase.java#L185 Silly stuff. Everything else works just fine. Fell free to reuse this stuff. FYI: I'd be confused it I was to use a class indicating 0.9 when working with 0.10, that's the reason I assembled separate module. 0.9 is done and there's no future work required, it makes sense to have 0.10. Just my opinion.
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