rreddy-22 commented on code in PR #19910:
URL: https://github.com/apache/kafka/pull/19910#discussion_r2132508413
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core/src/main/scala/kafka/coordinator/transaction/TransactionCoordinator.scala:
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@@ -828,7 +828,16 @@ class TransactionCoordinator(txnConfig: TransactionConfig,
nextProducerIdOrErrors.flatMap {
nextProducerId =>
- Right(coordinatorEpoch,
txnMetadata.prepareAbortOrCommit(nextState, clientTransactionVersion,
nextProducerId.asInstanceOf[Long], time.milliseconds(), noPartitionAdded))
+ // For epoch fence case, we don't want to bump the epoch
again in prepareAbortOrCommit
+ // since it was already bumped during the fencing phase to
avoid double increment
+ val transactionVersionForCall = if (isEpochFence) {
+ // Use TV_0 to prevent epoch bump since it was already
bumped during fencing
+ TransactionVersion.TV_0
Review Comment:
yess I was also concerned this was a little hacky solution that might cause
side effects, let me find another way
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