37We doubled Kafka's partition count to fix growing lag, and lag grew instead. Walk me through what a rebalance does to a group.▼mediumNewUberLinkedInSnowflake◆ premiumMore partitions should mean more throughput, so why did the backlog deepen? Because rebalance behavior depends on the group protocol, and the way consumers divide work decides who pays for it.Open full answer →
69Total consumer lag is climbing but only one partition is behind, and adding consumers changed nothing. Why?▼hardNewLinkedInUberSwiggy◆ premiumOne partition has one consumer, by design. If the key distribution sends a third of the traffic to one partition, the parallelism you bought is unavailable to the work that needs it.Open full answer →
