artemlivshits commented on code in PR #17698:
URL: https://github.com/apache/kafka/pull/17698#discussion_r1871905289
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core/src/main/scala/kafka/coordinator/transaction/TransactionCoordinator.scala:
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@@ -724,8 +977,7 @@ class TransactionCoordinator(txnConfig: TransactionConfig,
// check epoch + 1. Epoch bumps from PrepareEpochFence state are handled
separately, so this method should not be used to check that case.
// Returns true if the transaction state epoch is the specified producer
epoch + 1 and epoch bump on every transaction is expected.
private def endTxnEpochBumped(txnMetadata: TransactionMetadata,
producerEpoch: Short): Boolean = {
- !txnMetadata.pendingState.contains(PrepareEpochFence) &&
txnMetadata.clientTransactionVersion.supportsEpochBump() &&
- txnMetadata.producerEpoch == producerEpoch + 1
+ !txnMetadata.pendingState.contains(PrepareEpochFence) &&
txnMetadata.producerEpoch == producerEpoch + 1
Review Comment:
I'm not sure we can check
`txnMetadata.pendingState.contains(PrepareEpochFence)` -- when we call this
function from the `sendTxnMarkersCallback` the pendingState is already
something else. We need to pass the `isEpochFence` as an argument.
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