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Posted to issues@arrow.apache.org by "Neville Dipale (JIRA)" <ji...@apache.org> on 2019/04/23 10:31:00 UTC

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

     [ https://issues.apache.org/jira/browse/ARROW-5191?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Neville Dipale updated ARROW-5191:
----------------------------------
    Comment: was deleted

(was: Can work on this after 5181 is resolved)

> [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
>            Assignee: Neville Dipale
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 0.14.0
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> 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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