Ismael Juma created KAFKA-5017:
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Summary: Consider making baseOffset the first offset in message
format v2
Key: KAFKA-5017
URL: https://issues.apache.org/jira/browse/KAFKA-5017
Project: Kafka
Issue Type: Sub-task
Reporter: Ismael Juma
Fix For: 0.11.0.0
Currently baseOffset starts as the first offset of the batch. If the first
record is removed by compaction, baseOffset doesn't change and it is no longer
the same as the first offset of the batch. This is inconsistent with every
other field in the record batch header and it seems like there is no longer a
reason for this behaviour.
We should consider simplifying the behaviour so that baseOffset is simply the
first offset of the record batch. We need to do this before 0.11 or we probably
won't be able to do it until the next message format version change.
cc [~hachikuji]
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