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

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