Hey, As requested in the FLINK-1058 JIRA ticket we've started to put together a documentation for streaming. You can find it here: https://github.com/mbalassi/incubator-flink/blob/documentation/docs/streaming_guide.md
I've also built it: http://info.ilab.sztaki.hu/~mbalassi/flink-streaming/streaming_guide.html We are still working on the part on connectors and adding a section on aggregations soon. Any comments are welcome. Cheers, The streaming team