jolshan commented on code in PR #17698:
URL: https://github.com/apache/kafka/pull/17698#discussion_r1857410244
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core/src/main/scala/kafka/coordinator/transaction/TransactionMetadata.scala:
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@@ -333,16 +333,17 @@ private[transaction] class TransactionMetadata(val
transactionalId: String,
(topicPartitions ++ addedTopicPartitions).toSet, newTxnStartTimestamp,
updateTimestamp)
}
- def prepareAbortOrCommit(newState: TransactionState,
clientTransactionVersion: TransactionVersion, nextProducerId: Long,
updateTimestamp: Long): TxnTransitMetadata = {
+ def prepareAbortOrCommit(newState: TransactionState,
clientTransactionVersion: TransactionVersion, nextProducerId: Long,
updateTimestamp: Long, isEmptyAbort: Boolean): TxnTransitMetadata = {
val (updatedProducerEpoch, updatedLastProducerEpoch) = if
(clientTransactionVersion.supportsEpochBump()) {
// We already ensured that we do not overflow here. MAX_SHORT is the
highest possible value.
((producerEpoch + 1).toShort, producerEpoch)
} else {
(producerEpoch, lastProducerEpoch)
}
+ val newTxnStartTimestamp = if (isEmptyAbort) updateTimestamp else
txnStartTimestamp
Review Comment:
can we leave a comment explaining this? It might be confusing to those who
don't know this code.
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