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History

Jason Gustafson 7833cd81a6 KAFKA-9144; Track timestamp from txn markers to prevent early producer expiration (#8960) ... This is a backport of (#7687) for 2.3. Existing producer state expiration uses timestamps from data records only and not from transaction markers. This can cause premature producer expiration when the coordinator times out a transaction because we drop the state from existing batches. This in turn can allow the coordinator epoch to revert to a previous value, which can lead to validation failures during log recovery. This patch fixes the problem by also leveraging the timestamp from transaction markers. We also change the validation logic so that coordinator epoch is verified only for new marker appends. When replicating from the leader and when recovering the log, we only log a warning if we notice that the coordinator epoch has gone backwards. This allows recovery from previous occurrences of this bug. Finally, this patch fixes one minor issue when loading producer state from the snapshot file. When the only record for a given producer is a control record, the "last offset" field will be set to -1 in the snapshot. We should check for this case when loading to be sure we recover the state consistently. Reviewers: Ismael Juma <ismael@juma.me.uk>, Guozhang Wang <wangguoz@gmail.com>		4 years ago
..
src	KAFKA-9144; Track timestamp from txn markers to prevent early producer expiration (#8960)	4 years ago
.gitignore	KAFKA-4848: Fix retryWithBackoff deadlock issue	8 years ago