Jason Gustafson created KAFKA-6530:

             Summary: Use actual first offset of messages when rolling log 
segment for magic v2
                 Key: KAFKA-6530
                 URL: https://issues.apache.org/jira/browse/KAFKA-6530
             Project: Kafka
          Issue Type: Bug
            Reporter: Jason Gustafson

We've implemented a heuristic to avoid overflowing when rolling a log segment 
to determine the base offset of the next segment without decompressing the 
message set to find the actual first offset. With the v2 message format, we can 
find the first offset without needing decompression, so we can set the correct 
base offset exactly.

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