Jason Gustafson created KAFKA-8509:
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Summary: Add downgrade system tests
Key: KAFKA-8509
URL: https://issues.apache.org/jira/browse/KAFKA-8509
Project: Kafka
Issue Type: Improvement
Reporter: Jason Gustafson
We've been bitten a few times by downgrade incompatibilities. It should be
straightforward to adapt our current upgrade system tests to support downgrades
as well. The basic procedure should be:
# Roll the cluster with the updated binary, keep IBP on old version
# Verify produce/consume
# Roll the cluster with the old binary, keep IBP the same.
# Verify produce/consume
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