Kafka Consumer Container Restarts in Kubernetes: A Production Case Study
Read OriginalThis article details a production incident where Kafka consumer containers in Kubernetes kept restarting due to OOMKills. The investigation revealed a partition mismatch (6 partitions vs 10 pods) causing load concentration on 60% of pods. Further analysis showed that the ZGC garbage collector struggled to reclaim memory fast enough during traffic bursts, leading to crashes. The article provides insights into debugging memory issues, Kafka consumer topology, and GC tuning in distributed systems.
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