Hi All! I am looking for a way to get a list of all the consumer groups that have offsets stored for a particular topic. I was thinking of making a request to describe all consumer groups, then filtering for the groups with offsets in the topic I care about.
I noticed, however, that while Kafka’s admin APIs seem to support requests to describe more than one group at a time: https://github.com/apache/kafka/blob/0.11.0/core/src/main/scala/kafka/admin/AdminClient.scala#L296 https://github.com/apache/kafka/blob/0.11.0/clients/src/main/java/org/apache/kafka/common/requests/DescribeGroupsRequest.java#L34 the current 0.11 AdminClient does not have a feature for making a single request to describe multiple consumer groups. Is there a reason for this feature not being present in AdminClient? Does anyone know of a better way to list consumer groups by topic, or whether directly calling a Kafka network client with a DescribeGroupsRequest with a large number of consumer group ID’s could noticeably impact the performance of the Kafka brokers? Thanks, Rory
