Description
We create an instance of ObjectSerializationCache at https://github.com/apache/kafka/blob/trunk/core/src/main/scala/kafka/network/RequestChannel.scala#L113 which does not get used at all. We always "add" to the cache but never retrieve from it (as is evident by the fact that we don't store the reference of the cache anywhere).
Adding information to the cache is expensive because it uses System.identityHashCode(Object) which is expensive as demonstrated by the flame graph of producer requests over Apache Kafka 3.3.1 plaintext broker. 
Attachments
Attachments
Issue Links
- is a child of
-
KAFKA-14541 Profile produce workload for Apache Kafka
-
- In Progress
-
- links to