Hi, On 12/26/18 10:53 AM, MCG wrote:
I'm not talking about orderliness, but that the same consumer group, the same partition, is consumed by multiple consumers. I use kafka-consumer-groups.sh and org.apache.kafka.clients.admin.AdminClient to validate the results. Because the same consumer group subscribes to a topic, the same partition cannot be consumed by multiple consumers. But that happened.
This could be classified as "at least once" semantics. Was that happening when a new consumer joined the group and partitions were re-balanced? Was this only a transient condition for a few messages or was it that two consumers were consuming same messages for a long time?
Regards, Peter
