Alyssa Huang created KAFKA-18394:
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Summary: Formalize durable and in-memory election state changes
Key: KAFKA-18394
URL: https://issues.apache.org/jira/browse/KAFKA-18394
Project: Kafka
Issue Type: Improvement
Reporter: Alyssa Huang
We essentially have two paths of epoch state transitions -
1. one which involves updating on-disk election state and then in-memory epoch
state (which includes in-memory election state changes)
2. on which does not involve any changed election state and just needs an
in-memory epoch state change
For the second case, we should explicitly check no persisted or in-memory
election state has changed. For the first case, we should have the in-memory
election state derive from the persisted election state change. (It should be
impossible for the two to differ)
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