cmccabe commented on code in PR #18148:
URL: https://github.com/apache/kafka/pull/18148#discussion_r1911567192
##########
metadata/src/main/java/org/apache/kafka/controller/BrokersToElrs.java:
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@@ -158,4 +158,9 @@ BrokersToIsrs.PartitionsOnReplicaIterator
partitionsWithBrokerInElr(int brokerId
}
return new BrokersToIsrs.PartitionsOnReplicaIterator(topicMap, false);
}
+
+ @SuppressWarnings("unchecked")
+ BrokersToIsrs.PartitionsOnReplicaIterator partitionsWithElr() {
+ return new
BrokersToIsrs.PartitionsOnReplicaIterator(elrMembers.values().stream().map(m ->
(Map<Uuid, int[]>) m).iterator(), false);
Review Comment:
You cannot materialize all the partitions in the system like this. It will
be disastrous for performance.
If you need this, write a real iterator that materializes one element at a
time.
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