Was wondering the same. From what I can tell it shows unknown when no committed offset is recorded for that partition by the consumer.
On Mon, Mar 28, 2016 at 12:25 PM, craig w <codecr...@gmail.com> wrote: > When using the ConsumerGroupCommand to describe a group (using > new-consumer, 0.9.0.1) why does "unknown" show up in the "current offset" > and "lag" columns? > > For some topics consumed by the group, the columns have values, but for one > topic it has unknown. >
