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Posted to jira@arrow.apache.org by "Micah Kornfield (Jira)" <ji...@apache.org> on 2021/02/15 17:53:00 UTC
[jira] [Updated] (ARROW-11632) [Rust] csv::Reader doesn't propagate
schema metadata to RecordBatches
[ https://issues.apache.org/jira/browse/ARROW-11632?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Micah Kornfield updated ARROW-11632:
------------------------------------
Summary: [Rust] csv::Reader doesn't propagate schema metadata to RecordBatches (was: csv::Reader doesn't propagate schema metadata to RecordBatches)
> [Rust] csv::Reader doesn't propagate schema metadata to RecordBatches
> ---------------------------------------------------------------------
>
> Key: ARROW-11632
> URL: https://issues.apache.org/jira/browse/ARROW-11632
> Project: Apache Arrow
> Issue Type: Bug
> Components: Rust
> Affects Versions: 4.0.0
> Reporter: Marko Mikulicic
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Rust csv::Reader doesn't propagate schema metadata to RecordBatches it creates:
>
> {code:java}
> let reader = csv::ReaderBuilder::new()
> .with_schema(Arc::new(Schema::new_with_metadata(fields, metadata)))
> .build(file)
> .unwrap();
> let batch = reader.next().unwrap().unwrap();
> assert_eq!(reader.schema(), batch.schema());{code}
>
> The parquet writer crate complains about the schema non matching with this error:
> Record batch schema does not match writer schema
>
>
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