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Posted to dev@arrow.apache.org by "Neal Richardson (Jira)" <ji...@apache.org> on 2019/09/11 21:28:00 UTC

[jira] [Created] (ARROW-6536) [C++] CSV reader accept schema

Neal Richardson created ARROW-6536:
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             Summary: [C++] CSV reader accept schema
                 Key: ARROW-6536
                 URL: https://issues.apache.org/jira/browse/ARROW-6536
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
            Reporter: Neal Richardson


The CSV reader lets you specify {{column_types}}, but this is an {{unordered_map}} of column name and type. Why not accept a Schema instead? Isn't that essentially an ordered map? Seems that if you took a Schema, some of the validation of what's being passed in would already have been handled. Plus, I suspect that the Datasets project will want to do even more with passing a Schema (e.g. selecting a subset of columns). 

Thoughts [~pitrou] [~fsaintjacques] [~bkietz]?



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