Storing offsets in S3 may not be a great idea due to the lack of strong consistency, and could result in the same offset being vended multiple times.

The person that brought it up had mention they were looking to use http://docs.basho.com/riakcs/latest/references/apis/storage/s3/ as way to plug it in.

Before we would even do this we would do this but providing the plug-able interface for zookeeper both for consensus and offset storage is important. Probably after siesta gets tested to replace sarama.