msn-tldr commented on code in PR #15323:
URL: https://github.com/apache/kafka/pull/15323#discussion_r1481455003
##########
clients/src/main/java/org/apache/kafka/clients/producer/internals/RecordAccumulator.java:
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@@ -647,27 +647,27 @@ private long batchReady(boolean exhausted, TopicPartition
part, Node leader,
}
/**
- * Iterate over partitions to see which one have batches ready and collect
leaders of those partitions
- * into the set of ready nodes. If partition has no leader, add the topic
to the set of topics with
- * no leader. This function also calculates stats for adaptive
partitioning.
+ * Iterate over partitions to see which one have batches ready and collect
leaders of those
+ * partitions into the set of ready nodes. If partition has no leader,
add the topic to the set
+ * of topics with no leader. This function also calculates stats for
adaptive partitioning.
*
- * @param metadata The cluster metadata
- * @param nowMs The current time
- * @param topic The topic
- * @param topicInfo The topic info
+ * @param cluster The cluster metadata
+ * @param nowMs The current time
+ * @param topic The topic
+ * @param topicInfo The topic info
* @param nextReadyCheckDelayMs The delay for next check
- * @param readyNodes The set of ready nodes (to be filled in)
- * @param unknownLeaderTopics The set of topics with no leader (to be
filled in)
+ * @param readyNodes The set of ready nodes (to be filled in)
+ * @param unknownLeaderTopics The set of topics with no leader (to be
filled in)
* @return The delay for next check
*/
- private long partitionReady(Metadata metadata, long nowMs, String topic,
+ private long partitionReady(Cluster cluster, long nowMs, String topic,
Review Comment:
@hachikuji
Thanks for pointing it out. As it turns out I don't need to extend the
public interface of `Cluster` in order to get epoch. So internal usage doesn't
change Cluster's interface anymore.
> We have been trying to reduce the reliance on Cluster internally because
it is public.
This could be achieved by created a forwarding class `ClusterInternal` that
uses `Cluster` by composition offering the same interface. Then `client` code
can be refactored to use `ClusterInternal`. That way future extensions of
`Cluster`'s public interface for internal use-cases could be prevented by
making them in `ClusterInternal`.
But this is going to be a size-able refactor, how about keeping it separate
from this PR? As the intention of this PR is to fix the perf bug, cherry-pick
it to other branches.
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