Memory leak with sarama on KEDA 2.15

[akhilbalaji94]

Report

We have observed a memory leak in the sarama library used in the keda-operator app which is causing the keda-operator pod to be OOM killed. The issue arises when there a many invalid kafka scaledobjects objects configured. We've enabled profiling on the keda-operator and see the below usage in the heap

Expected Behavior

The keda-operator app should not have a memory leak

Actual Behavior

The keda-operator pod getting OOM killed frequently

Steps to Reproduce the Problem

1. Install KEDA 2.15.1
2. Create a bunch of invalid kafka scaledobjects
3. Observe the pod memory usage increasing gradually until it gets OOM Killed

Logs from KEDA operator

example

KEDA Version

2.15.1

Kubernetes Version

1.28

Platform

Microsoft Azure

Scaler Details

Kafka

Anything else?

No response