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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/05/07 15:02:13 UTC

[GitHub] [arrow] pitrou commented on pull request #10204: [WIP] ARROW-11928: [C++] Execution engine API

pitrou commented on pull request #10204:
URL: https://github.com/apache/arrow/pull/10204#issuecomment-834490550


   > I think we can defer support for multiple consumers for the moment, I'm refactoring to singular output nodes
   
   Hmm, I'm not convinced about this. Say you have a RecordBatchReader with several columns of interest. You want each column to feed a separate execution node (say, one different scalar function per column). How do you do that if you can only have singular output nodes? Implement a "supernode" that applies multiple scalar functions to multiple columns?


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