Hi Piotrek Yes I've compared rebalance with rescale. I adjusted the parallelism of the source and target operators so that rescale would behave more or less like the "local or shuffle grouping" option. I was able to show that for my use case a "local or shuffle grouping" option would yield at least about 30% performance improvement over rebalance.
I will submit a feature request. Thanks for your prompt reply. Hans -- Sent from: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/
