dajac commented on a change in pull request #9547:
URL: https://github.com/apache/kafka/pull/9547#discussion_r526207135
##########
File path:
clients/src/main/java/org/apache/kafka/clients/consumer/internals/OffsetsForLeaderEpochClient.java
##########
@@ -61,67 +77,76 @@ protected OffsetForEpochResult handleResponse(
Map<TopicPartition, SubscriptionState.FetchPosition> requestData,
OffsetsForLeaderEpochResponse response) {
+ Set<TopicPartition> missingPartitions = new
HashSet<>(requestData.keySet());
Review comment:
The downside of relying on `partitionsToRetry` is that we can't
differentiate the partitions to be retried due to an error from the missing
partitions in the response. It may not be that important but we can't preserve
the above log otherwise.
```
logger().warn("Missing partition {} from response, retrying.",
topicPartition);
```
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