Jun Rao created KAFKA-6857:
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Summary: LeaderEpochFileCache.endOffsetFor() should check for
UNDEFINED_EPOCH explicitly
Key: KAFKA-6857
URL: https://issues.apache.org/jira/browse/KAFKA-6857
Project: Kafka
Issue Type: Bug
Components: core
Affects Versions: 0.11.0.0
Reporter: Jun Rao
In LeaderEpochFileCache.endOffsetFor() , we have the following code.
{code:java}
if (requestedEpoch == latestEpoch) {
leo().messageOffset
{code}
In the case when the requestedEpoch is UNDEFINED_EPOCH and latestEpoch is also
UNDEFINED_EPOCH, we return leo. This will cause the follower to truncate to a
wrong offset. If requestedEpoch is UNDEFINED_EPOCH, we need to request
UNDEFINED_EPOCH_OFFSET.
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