Hi,
Right now it is a Kafka source, but I had the same issue when reading data from local FS. It looks like a common problem for many (all?) sources. When incoming data is very small (paths to large archives) but each entry requires a significant time to process (unpack, parse, etc.) Flink detects the back pressure with delay and too much data becomes part of the first transaction. -- Best regards, Andrei Shumanski On Fri, May 18, 2018 at 11:44 AM, makeyang <riverbuild...@hotmail.com> wrote: > Andrei Shumanski: > which source are u using? > > > > -- > Sent from: http://apache-flink-user-mailing-list-archive.2336050. > n4.nabble.com/ >