Can join cardinality can be tackled with cogroup and not expanding the rows until final write?
I don't know what cogroup is, sorry.
More generally, there are algorithms for multi-way joins (with some theoretical guarantees), but they tend to perform worse in practice than just a set of binary joins with a good implementation.
I don't know what cogroup is, sorry.
More generally, there are algorithms for multi-way joins (with some theoretical guarantees), but they tend to perform worse in practice than just a set of binary joins with a good implementation.