[GitHub] [arrow-rs] Dandandan opened a new issue #1338: Arrow ipc FileReader projection support

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

Dandandan opened a new issue #1338:
URL: https://github.com/apache/arrow-rs/issues/1338


   **Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
   The `FileReader` currently doesn't support projection to skip reading/decoding certain columns.
   This could be used by engines lole DataFusion to make the Arrow file reader more efficient.
   
   **Describe the solution you'd like**
   Support an optional `Vec<usize>` parameter to configure the column indexes in the reader.
   
   **Describe alternatives you've considered**
   
   
   **Additional context**
   See support in arrow2
   https://docs.rs/arrow2/latest/arrow2/io/ipc/read/struct.FileReader.html
   


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[GitHub] [arrow-rs] Dandandan closed issue #1338: Arrow IPC projection support

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

Dandandan closed issue #1338:
URL: https://github.com/apache/arrow-rs/issues/1338


   


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