Use of kafka-consumer-group.sh with -
reset-offsets --execute <-to-earliest or anything> has no effect in 1.0. When my group client connects and requests a specific offset or an earliest there's no effect and the consumer is unable to poll, so no messages, even new ones are ignored.
I installed 0.11 and these problems are not manifest.
I'm unfamiliar with the internals and put the offset manager as the possible component, but that's a guess.