Kevin Wu created KAFKA-17713:
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Summary: Ensure snapshots are aligned to batch boundaries
Key: KAFKA-17713
URL: https://issues.apache.org/jira/browse/KAFKA-17713
Project: Kafka
Issue Type: Bug
Reporter: Kevin Wu
In the case of a metadata transaction that is started in the middle of the
record batch, the records preceding the BeginTransactionRecord in the batch are
flushed. This means the SnapshotGenerator can emit a snapshot whose fetch
offset (lastContainedOffset + 1) "X" is not aligned to a batch boundary. This
can result in followers/observers that fetch and apply this bad snapshot to be
unable to successfully fetch thereafter since the follower will reject the
fetched record batch that contains offset X (starting at offset X - M), since X
- M < X.
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