Scheduled Job In Kafka, Every 2h?

Hello Apache Kafka community,
I'm seeing some cyclic load on cluster, trying to determine cause.
Couldn't determine from docs - is there some internal scheduled job in
Kafka (0.8.2.1) executing on every broker every two hours?
Kind regards,
Stevo Slavic.

Hi @ all, I run a 3h perf test on production and after a constant amount of samples (~5000 i.e. ~2h into the test). I get a huge bump in my return times. This does not seem to be the application but jmeter/java getting into a tangle. After about 12min the results normalise again. Now I've run the same test in 3 parts of 1h directly back to back and I don't see the bump. The Jmeter machine has more