[jira] [Assigned] (ARROW-17924) [Docs] Clarify immutability assumption in the C Data Interface documentation

["Antoine Pitrou (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-17924?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou reassigned ARROW-17924:
--------------------------------------

    Assignee: Antoine Pitrou

> [Docs] Clarify immutability assumption in the C Data Interface documentation
> ----------------------------------------------------------------------------
>
>                 Key: ARROW-17924
>                 URL: https://issues.apache.org/jira/browse/ARROW-17924
>             Project: Apache Arrow
>          Issue Type: Task
>          Components: Documentation, Format
>            Reporter: Joris Van den Bossche
>            Assignee: Antoine Pitrou
>            Priority: Major
>
> The current documentation (https://arrow.apache.org/docs/dev/format/CDataInterface.html) is not explicit about whether there are any guarantees about (im)mutability. 
> My assumption is that the _consumer_ of C Data Interface structs should _assume_ the data to be immutable by default (unless they would know that the producer is fine with mutating the data). But it would be good to document this.
> (as a reference, the DLPack Python docs mention this: https://dmlc.github.io/dlpack/latest/python_spec.html#semantics)



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