artemlivshits commented on code in PR #17687:
URL: https://github.com/apache/kafka/pull/17687#discussion_r1828556830
##########
core/src/main/scala/kafka/coordinator/transaction/TransactionMetadata.scala:
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@@ -380,50 +417,39 @@ private[transaction] class TransactionMetadata(val
transactionalId: String,
}
}
- private def prepareTransitionTo(updatedState: TransactionState,
- updatedProducerId: Long,
- updatedEpoch: Short,
- updatedLastEpoch: Short,
- updatedTxnTimeoutMs: Int,
- updatedTopicPartitions:
immutable.Set[TopicPartition],
- updatedTxnStartTimestamp: Long,
- updateTimestamp: Long): TxnTransitMetadata =
{
- prepareTransitionTo(updatedState, updatedProducerId,
RecordBatch.NO_PRODUCER_ID, updatedEpoch, updatedLastEpoch,
updatedTxnTimeoutMs, updatedTopicPartitions, updatedTxnStartTimestamp,
updateTimestamp, TransactionVersion.TV_0)
- }
-
- private def prepareTransitionTo(updatedState: TransactionState,
- updatedProducerId: Long,
- nextProducerId: Long,
- updatedEpoch: Short,
- updatedLastEpoch: Short,
- updatedTxnTimeoutMs: Int,
- updatedTopicPartitions:
immutable.Set[TopicPartition],
- updatedTxnStartTimestamp: Long,
- updateTimestamp: Long,
- clientTransactionVersion:
TransactionVersion): TxnTransitMetadata = {
+ private def prepareTransitionTo(state: TransactionState,
+ producerId: Long = this.producerId,
Review Comment:
The defaults just mean that there is no change, so if the caller doesn't use
an argument, then it remains unchanged for the transition. I think it makes
code easier to read than to require every parameter to be specified: the
changed stuff is easy to see from just glancing at the function call, no need
to mentally parse which arguments are updated and which stay the same.
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