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https://issues.apache.org/jira/browse/ARROW-8197?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Grove resolved ARROW-8197.
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Resolution: Fixed
Issue resolved by pull request 6703
[https://github.com/apache/arrow/pull/6703]
> [Rust] DataFusion "create_physical_plan" returns incorrect schema?
> ------------------------------------------------------------------
>
> Key: ARROW-8197
> URL: https://issues.apache.org/jira/browse/ARROW-8197
> Project: Apache Arrow
> Issue Type: Bug
> Components: Rust, Rust - DataFusion
> Affects Versions: 0.15.1
> Reporter: Paddy Horan
> Assignee: Andy Grove
> Priority: Minor
> Labels: pull-request-available
> Fix For: 0.17.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> I am using DataFusion in a situation where I know there will only be a single
> file. DataFusion currently collects all batches into a vector.
> As I am writing the data back out I want to work with an iterator instead of
> a vector.
> I have something as follows:
> {code:java}
> let plan = ctx.create_logical_plan(&sql).unwrap();
> let plan = ctx.optimize(&plan).unwrap();
> dbg!(plan.schema()); // Returns field names
> let plan = ctx.create_physical_plan(&plan, batch_size).unwrap();
> dbg!(plan.schema()); // Returns c0, c1, etc{code}
> Maybe this is expected after turning the plan into a physical plan?
> I can change the schema of the returned batches, would this be the
> recommended way to address this or is there something in DataFusion I should
> leverage to do this?
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