dajac commented on code in PR #12897:
URL: https://github.com/apache/kafka/pull/12897#discussion_r1034773867
##########
clients/src/main/java/org/apache/kafka/clients/consumer/internals/Fetcher.java:
##########
@@ -346,8 +346,10 @@ public void onFailure(RuntimeException e) {
FetchSessionHandler handler =
sessionHandler(fetchTarget.id());
if (handler != null) {
handler.handleError(e);
+
handler.sessionTopicPartitions().forEach(subscriptions::clearPreferredReadReplica);
}
} finally {
+ metadata.requestUpdate();
Review Comment:
In `NetworkClient.processDisconnection`, it seems that we request refreshing
metadata upon connection issues.
##########
clients/src/main/java/org/apache/kafka/clients/consumer/internals/Fetcher.java:
##########
@@ -1944,4 +1946,9 @@ private Set<String>
topicsForPartitions(Collection<TopicPartition> partitions) {
return
partitions.stream().map(TopicPartition::topic).collect(Collectors.toSet());
}
+ private void prepareMetadataRefresh(TopicPartition topicPartition) {
Review Comment:
nit: `requestMetadataUpdateAndClearPreferredReadReplica` or
`requestMetadataUpdate`?
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