[GitHub] [arrow-datafusion] andygrove opened a new issue #456: Ballista: Implement map-side of shuffle

[GitBox <gi...@apache.org>]

andygrove opened a new issue #456:
URL: https://github.com/apache/arrow-datafusion/issues/456


   **Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
   As a small step towards implementing https://github.com/apache/arrow-datafusion/issues/63 it would be good to implement a feature where a query stage can apply hash partitioning to the data produced by its plan and write one IPC file per output partition. This implements the map-side of the shuffle operation.
   
   **Describe the solution you'd like**
   `QueryStageExec` should have an optional output partitioning scheme, restricted to accepting hash partitioning only. If this is specified then the batches produced by the query stage's plan would be hash-partitioned and written to separate files on disk.
   
   **Describe alternatives you've considered**
   None
   
   **Additional context**
   None
   


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[GitHub] [arrow-datafusion] andygrove closed issue #456: Ballista: Implement map-side of shuffle

[GitBox <gi...@apache.org>]

andygrove closed issue #456:
URL: https://github.com/apache/arrow-datafusion/issues/456


   


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