Hi Kafka community, We have an issue with our Kafka cluster from time to time, that a single (one and only one) broker (leader) in the cluster reaches 100% CPU utilisation. We could not see any apparent issue from the metrics. There is no heap memory usage increase, no excessive connections made on the broker, no misbehaving producers and consumers trying to dump or load excessively during these periods. The only difference we could see is that thread usage decreases during these period. Despite the problem, the service is still available (understandable from Kafka's perspective.)
We are trying to understand what else might be the cause of the issue and how we can mitigate them. Tiansu Yu Engineer Data Ingestion & Streaming Klarna Bank AB German Branch Chausseestraße 117 10115 Berlin Tel: +49 221 669 501 00 klarna.de Klarna Bank AB, German Branch Sitz: Berlin, Amtsgericht Charlottenburg HRB 217291 B USt-Nr.: DE 815 867 324 Zweigstelle der Klarna Bank AB (publ), AG schwedischen Rechts mit Hauptsitz in Stockholm, Schw. Gesellschaftsregister 556737-0431 Verwaltungsratsvorsitzender: Michael Moritz Geschäftsführender Direktor: Sebastian Siemiatkowski Leiter Zweigniederlassung: Yaron Shaer, Björn Petersen
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