Jason Gustafson created KAFKA-10498:
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Summary: Consumer should do offset/epoch validation through
`Fetch` when possible
Key: KAFKA-10498
URL: https://issues.apache.org/jira/browse/KAFKA-10498
Project: Kafka
Issue Type: Improvement
Reporter: Jason Gustafson
Assignee: Chia-Ping Tsai
Currently the consumer has logic to detect truncations (as a result of unclean
leader election for example) using the OffsetsForLeaderEpoch API. It is a
rather cumbersome and expensive process since we have to check for the need to
send this request on every poll(). We should be able to do better now that
KIP-595 has built support for truncation detection directly into the `Fetch`
protocol. This should allow us to skip validation when we know that the `Fetch`
version is high enough.
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