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Code Block
$ bin/kafka-consumer-groups.sh --bootstrap-server localhost:9092 --describe --group my-group --members --verbose
GROUP			CONSUMER-ID				HOST			CLIENT-ID			#PARTITIONS		CURRENT-EPOCH	CURRENT-ASSIGNMENT			TARGET-EPOCH	TARGET-ASSIGNMENT			IS-CLASSIC
my-group		T4tbGKsvT7CtsxVBH5J2QQ	/127.0.0.1		consumer-group		4				1				my_topic:0,1;new_topic:0,1	1				my_topic:0,1;new_topic:0,1	false

Following table lists protocol IS-CLASSIC meaning.

ProtocolIS-CLASSICMeaning
"classictrue"

A member in classic group.

A member with non-null classicMemberMetadata in consumer group.

"consumer"A member with null classicMemberMetadata in consumer group.false"Other members"share"A member in share group.

--describe --offsets --verbose / --describe --verbose

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