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Posted to users@kafka.apache.org by Mayuresh Gharat <gh...@gmail.com> on 2021/08/17 23:11:16 UTC
Kafka-consumer-groups.sh says "no active members" but the
CURRENT_OFFSET is moving
Hi Folks,
We recently came across a weird scenario where we had a consumer group
consuming from multiple topics. When we ran the "Kafka-consumer-group"
command multiple times, we saw that the CURRENT-OFFSET is advancing;
however , we also saw a line printed:
*"Consumer group 'GROUP_ABC' has no active members."*
The consumer lag graph shows no data from this group.
Here is the output from the Kafka-consumer-groups.sh:
./bin/kafka-consumer-groups.sh --bootstrap-server <HOST:PORT> --group
GROUP_ABC --describe
*Consumer group 'GROUP_ABC' has no active members.*
GROUP TOPIC
PARTITION CURRENT-OFFSET LOG-END-OFFSET LAG CONSUMER-ID
HOST CLIENT-ID*GROUP_ABC*
TOPIC_A 0 2280611 3861697
1581086 - - -
*GROUP_ABC
*TOPIC_A 1 3845015 3845015
0 - - -
*GROUP_ABC* Topic_B 2
530 530 0 -
- -*GROUP_ABC
*TOPIC_A 2 2387180
3736450 1349270 - - -
*GROUP_ABC* TOPIC_B 0
655 655 0 -
- -*GROUP_ABC* TOPIC_B
1 563 563 0
- - -
Any idea why this might be happening?
Thanks and regards,
Mayuresh