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https://issues.apache.org/jira/browse/ARROW-4818?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Grove closed ARROW-4818.
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Resolution: Duplicate
I ended up doing this in ARROW-4466
> [Rust] [DataFusion] Parquet data source does not support null values
> --------------------------------------------------------------------
>
> Key: ARROW-4818
> URL: https://issues.apache.org/jira/browse/ARROW-4818
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Rust, Rust - DataFusion
> Affects Versions: 0.12.0
> Reporter: Andy Grove
> Assignee: Andy Grove
> Priority: Major
> Fix For: 0.13.0
>
>
> As far as I can tell, there is no way to handle null values in either the row
> or column based readers for Parquet.
>
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