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Jun Rao commented on KAFKA-4088: -------------------------------- It may be possible to cover this in a unit test. ByteBufferMessageSetTest.getMessages() allows us to generate message sets in 0.9 format. So, we can start a broker, use the log.append() api to insert some 0.9 message sets. Then, run MirrorMaker to mirror the data to another cluster. > Add regression check for KAFKA-4073 > ----------------------------------- > > Key: KAFKA-4088 > URL: https://issues.apache.org/jira/browse/KAFKA-4088 > Project: Kafka > Issue Type: Test > Reporter: Geoff Anderson > > The patch for KAFKA-4073 fixed an issue introduced in 0.10.0.1, it may be > worth adding a regression test > Ideally this would be a unit test, but it's not immediately clear how to do > so since it's hard to produce a pre-0.10.0 message through the producer api > in 0.10.0 > If we were to write a system test, it would look something like: > Setup: > - Two small kafka clusters, 0.9.0.X (source), and 0.10.0.X (destination) > - 0.9.0.X mirror maker from source to destination > Produce messages with 0.9.X producer to source brokers. > upgrade source brokers to 0.10.0.1 > upgrade mirror maker to 0.10.0.1 (don't upgrade 0.9 producer) > This should reveal the problem if run without the fix introduced in KAFKA-4073 -- This message was sent by Atlassian JIRA (v6.3.4#6332)
