Re: Flink slot utilization

2019-12-17 Thread Robert Metzger
Hi, 1) By default, Flink's Kafka connector is polling data from Kafka every 100ms. There's a configuration key "flink.poll-timeout" to change the frequency. I don't have experience with these internal log messages from Kafka, but since they are on INFO level (and if you don't see any unexpected da

Re: Flink slot utilization

2019-12-17 Thread Andrés Garagiola
Thanks Roberts, About your questions, I don't have yet a real estimation regarding the number of records received by the pipeline but I guess that the pipeline could be idle for several minutes (I don't think that for hours). My concern comes to me from two aspects: 1) I saw multiple lines in

Re: Flink slot utilization

2019-12-17 Thread Robert Metzger
Hi Andrés, sorry for the late reply. 1. The slots are released, when the streaming pipeline ends. In principle, it is not a problem when a slot is allocated, even when not processing any incoming messages. So you are not doing something wrong. How many records do you receive per pipeline? (are the