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Partition and Sort Enforcement #3854

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mingmwang opened this issue Oct 17, 2022 · 0 comments · Fixed by #3969, #4043 or #4122
Closed

Partition and Sort Enforcement #3854

mingmwang opened this issue Oct 17, 2022 · 0 comments · Fixed by #3969, #4043 or #4122
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enhancement New feature or request

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@mingmwang
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mingmwang commented Oct 17, 2022

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
(This section helps Arrow developers understand the context and why for this feature, in addition to the what)

In current DataFusion codebase, when it does the physical planning, it added RepartitionExec node blindly when it sees the hash join or aggregation without considering the children's output partitioning. It might add unnecessary RepartitionExecs
to the plan tree.

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