Hi, Wondering if anyone can provide some insight into some unexpected behavior we're seeing with the 0.9 consumer:
1) We create two consumer instances, each with the same group.id and subscribe them to the same topic. 2) We would expect each consumer to be assigned 1/2 the topic partitions, but they both end up being assigned *all* the partitions. 3) The consumers constantly rebalance, which leads to a "CommitFailedException: Commit cannot be completed due to group rebalance". Here's the simple code to replicate: https://gist.github.com/benmyles/a275ffeccc64442a836a If we box each consumer inside a separate thread the problem goes away, however we'd like to understand why it doesn't work as-is. I understand consumers are not thread-safe, however we're not doing any concurrent access here, everything is sequential. Thanks, Ben Myles
