Dealing with latency in Sink

[Mohit Anchlia]

What is the best way to dynamically adapt and tune down number of tasks
created to write/read to a sink when sink slows down or the latency to sink
increases? I am looking at the sink interface but don't see a way to
influence flink to reduce the number of tasks or throttle the volume down
to the sink. What is the best way to deal with this scenario?