Ismael Juma created KAFKA-2857:
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Summary: ConsumerGroupCommand throws
GroupCoordinatorNotAvailableException when describing a non-existent group
before the offset topic is created
Key: KAFKA-2857
URL: https://issues.apache.org/jira/browse/KAFKA-2857
Project: Kafka
Issue Type: Bug
Components: tools
Reporter: Ismael Juma
Priority: Minor
If we describe a non-existing group before the offset topic is created, like
the following:
{code}
bin/kafka-consumer-groups.sh --bootstrap-server localhost:9092 --new-consumer
--describe --group gggg
{code}
We get the following error:
{code}
Error while executing consumer group command The group coordinator is not
available.
org.apache.kafka.common.errors.GroupCoordinatorNotAvailableException: The group
coordinator is not available.
{code}
The exception is thrown in the `adminClient.describeConsumerGroup` call. We
can't interpret this exception as meaning that the group doesn't exist because
it could also be thrown f all replicas for a offset topic partition are down
(as explained by Jun).
Jun also suggested that we should distinguish if a coordinator is not available
from the case where a coordinator doesn't exist.
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