artemlivshits commented on code in PR #15559:
URL: https://github.com/apache/kafka/pull/15559#discussion_r1535865337
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core/src/main/scala/kafka/server/ReplicaManager.scala:
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@@ -830,7 +830,11 @@ class ReplicaManager(val config: KafkaConfig,
val customException =
error match {
case Errors.INVALID_TXN_STATE => Some(error.exception("Partition
was not added to the transaction"))
+ // Transaction verification can fail with a retriable error that
older clients may not
+ // retry correctly. Translate these to `NOT_ENOUGH_REPLICAS`,
which will cause such
+ // clients to retry the produce request.
Review Comment:
There are multiple errors that could could clients to retry produce request,
we chose this one because it doesn't trigger metadata refresh.
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