Hi Felipe, That depends on what do you mean by 'bandwidth'. If you mean the capability of the network stack, the answer would be no.
Here is a post about Flink network stack which may help: https://flink.apache.org/2019/06/05/flink-network-stack.html. Thanks, Yingjie Felipe Gutierrez <felipe.o.gutier...@gmail.com> 于2019年11月27日周三 下午11:13写道： > Hi community, > > I have a question about backpressure. Suppose a scenario that I have a map > and a reducer, and the reducer is back pressuring the map operator. I know > that the reducer is processing tuples at a lower rate than it is receiving. > > However, can I say that at least one channel between the map and the > reducer is totally using its available bandwidth? > > My guess is it is not, at least in the beginning. But as the time goes on > the tuples will be queued in the network buffer of the reducer and then the > bandwidth will be 100% of usage. Am I right? > > Thanks, > Felipe > > >
