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Posted to issues@arrow.apache.org by "Neville Dipale (JIRA)" <ji...@apache.org> on 2019/04/21 21:21:00 UTC

[jira] [Created] (ARROW-5191) [Rust] Expose schema in readers (CSV, JSON) without reading batches

Neville Dipale created ARROW-5191:
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             Summary: [Rust] Expose schema in readers (CSV, JSON) without reading batches
                 Key: ARROW-5191
                 URL: https://issues.apache.org/jira/browse/ARROW-5191
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Rust
            Reporter: Neville Dipale


It's sometimes convenient to be able to view a datasource's schema without reading the first record batch. This is a proposal to create a `pub fn schema(&self) -> Arc<Schema>` on the various readers that we support.

I think this would also enable schema inference in datafusion



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