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Description
Is your feature request related to a problem or challenge? Please describe what you are trying to do.
The main issue limiting scalability in Ballista today is that joins are implemented as hash joins where each partition of the probe side causes the entire left side to be loaded into memory.
Describe the solution you'd like
To make this scalable we need to hash partition left and right inputs so that we can join the left and right partitions in parallel.
There is already work underway in DataFusion to implement this that we can leverage.
Describe alternatives you've considered
None
Additional context
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enhancementNew feature or requestNew feature or request