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https://issues.apache.org/jira/browse/ARROW-8391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17080561#comment-17080561
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Wes McKinney commented on ARROW-8391:
-------------------------------------
Currently we just have the file format that's defined in
https://github.com/apache/arrow/blob/master/docs/source/format/Columnar.rst#ipc-file-format
and
https://github.com/apache/arrow/blob/master/format/File.fbs
If you'd like to propose changes to the format we would need to have a mailing
list discussion about it and then a PR with the proposed changes that can be
formally adopted. That said it would still be nice to be able to do read-range
with the existing file structure.
> [C++] Implement row range read API for IPC file (and Feather)
> -------------------------------------------------------------
>
> Key: ARROW-8391
> URL: https://issues.apache.org/jira/browse/ARROW-8391
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Priority: Major
>
> The objective would be able to read a range of rows from the middle of a
> file. It's not as easy as it might sound since all the record batch metadata
> must be examined to determine the start and end point of the row range
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