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https://issues.apache.org/jira/browse/ARROW-10109?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jorge updated ARROW-10109:
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Summary: [Rust] Add support to produce a C Data interface (was: [Rust] Add
support to produce and consume a C Data interface)
> [Rust] Add support to produce a C Data interface
> ------------------------------------------------
>
> Key: ARROW-10109
> URL: https://issues.apache.org/jira/browse/ARROW-10109
> Project: Apache Arrow
> Issue Type: New Feature
> Components: Rust
> Reporter: Jorge
> Assignee: Jorge
> Priority: Major
> Fix For: 3.0.0
>
>
> The goal of this issue is to support importing C Data arrays into Rust via
> FFI.
>
> The use-case that motivated this issue was the possibility of running
> DataFusion from Python and support moving arrays from DataFusion to
> Python/Pyarray and vice-versa.
> In particular, so that users can write Python UDFs that expect arrow arrays
> and return arrow arrays, in the same spirit as pandas-udfs in Spark work for
> Pandas.
> The brute-force way of writing these arrays is by converting element by
> element from and to native types. The efficient way of doing it to pass the
> memory address from and to each implementation, which is zero-copy.
> To support the latter, we need an FFI implementation in Rust that produces
> and consumes [C's Data
> interface|https://arrow.apache.org/docs/format/CDataInterface.html]
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