akhileshchg commented on code in PR #12961:
URL: https://github.com/apache/kafka/pull/12961#discussion_r1050063855
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core/src/main/scala/kafka/server/MetadataCache.scala:
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@@ -103,13 +110,18 @@ trait MetadataCache {
def metadataVersion(): MetadataVersion
def features(): FinalizedFeaturesAndEpoch
+
+ def getRandomAliveBrokerId: Option[Int]
Review Comment:
Returning an `Option[Node]` doesn't really solve the problem of checking the
type of controller. The real problem is this: We query metadataCache 1) either
for a real kraft controller (to build communication channels, for ex.) or 2)
for a random broker if we have a kraft controller (to respond to metadata and
describe cluster requests).
I initially had two different functions returning either real controller id
or random broker id in the case of kraft controller. This will help reduce
type-checking outside this class. But Coling advised against this.
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