[jira] [Resolved] (ARROW-15823) [C++][Python] Add a method to convert a Table to a RecordBatchReader

["David Li (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-15823?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Li resolved ARROW-15823.
------------------------------
    Fix Version/s: 8.0.0
       Resolution: Fixed

Issue resolved by pull request 12621
[https://github.com/apache/arrow/pull/12621]

> [C++][Python] Add a method to convert a Table to a RecordBatchReader
> --------------------------------------------------------------------
>
>                 Key: ARROW-15823
>                 URL: https://issues.apache.org/jira/browse/ARROW-15823
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++, Python
>            Reporter: Weston Pace
>            Assignee: Sanjiban Sengupta
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 8.0.0
>
>          Time Spent: 1h 50m
>  Remaining Estimate: 0h
>
> The RecordBatchReader interface is a key abstraction for the C stream API.  There is no great way today to convert a Table (or an iterable of batches) to a RecordBatchReader.
> DuckDb is currently doing this by wrapping the Table in an in-memory dataset and consuming it with a scanner but this has considerable overhead (especially if the Table has many batches).
> Alternatively, we could add bridge methods to export a table to a stream but I think this approach would be simpler.



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