You are right Aljoscha . Jog graph is splitted after introducing partitioner .
I was under impression that If parallelism is set everything will be chained together . Can you explain how data will flow for map -> partitioner -> flatmap if parallelism or It would be great if point me to right documentation ? Can is this possible it can add more than 100 seconds delay if partitioner is added ? Sorry for dumb question but I did not find any detailed documentation on flink website . Most of links https://cwiki.apache.org/confluence/display/FLINK/Parallelism+and+Scheduling are also empty as of now . -- View this message in context: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Using-Custom-Partitioner-in-Streaming-with-parallelism-1-adding-latency-tp13766p13774.html Sent from the Apache Flink User Mailing List archive. mailing list archive at Nabble.com.