Jun Rao created KAFKA-6858:
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Summary: Log.truncateTo() may truncate to an earlier offset than
requested
Key: KAFKA-6858
URL: https://issues.apache.org/jira/browse/KAFKA-6858
Project: Kafka
Issue Type: Improvement
Reporter: Jun Rao
In Log.truncateTo(), if the truncation point is in the middle of a message set,
we will actually be truncating to the first offset of the message set. In that
case, the replica fetcher thread should adjust the fetch offset to the actual
truncated offset. Typically, the truncation point should never be in the middle
of a message set. However, this could potentially happen during message format
upgrade.
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