mjsax commented on code in PR #20325:
URL: https://github.com/apache/kafka/pull/20325#discussion_r2275144231
##########
core/src/main/scala/kafka/server/AutoTopicCreationManager.scala:
##########
@@ -64,6 +77,9 @@ class DefaultAutoTopicCreationManager(
) extends AutoTopicCreationManager with Logging {
private val inflightTopics = Collections.newSetFromMap(new
ConcurrentHashMap[String, java.lang.Boolean]())
+ private val topicCreationErrorCache = new ConcurrentHashMap[String,
CachedTopicCreationError]()
+ private val errorCacheTtlMs = config.requestTimeoutMs.toLong * 3 // 3x
request timeout
+ private val maxCacheSize = 1000
Review Comment:
Not sure if we would need a KIP (we would need one, if we would make it
configurable). But I would expect error rate to be low. If there is some issue
at some point, we can still limit it in the future, and with a TTL we would
expires old entries anyway.
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