You are viewing a plain text version of this content. The canonical link for it is here.
Posted to jira@arrow.apache.org by "Weston Pace (Jira)" <ji...@apache.org> on 2021/04/06 17:10:00 UTC
[jira] [Commented] (ARROW-12231) [C++][Dataset] Separate datasets
backed by readers from InMemoryDataset
[ https://issues.apache.org/jira/browse/ARROW-12231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17315721#comment-17315721 ]
Weston Pace commented on ARROW-12231:
-------------------------------------
To add to this. The reader-backed dataset is not restartable while a RecordBatchVector/Table-backed dataset could be restartable, or it could remove its ownership of the record batches / table as it scans (allowing batches already scanned to be freed).
> [C++][Dataset] Separate datasets backed by readers from InMemoryDataset
> -----------------------------------------------------------------------
>
> Key: ARROW-12231
> URL: https://issues.apache.org/jira/browse/ARROW-12231
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 4.0.0
> Reporter: Weston Pace
> Assignee: David Li
> Priority: Major
> Labels: dataset, datasets
>
> From ARROW-10882/[https://github.com/apache/arrow/pull/9802]
> * Backing an InMemoryDataset with a reader is misleading. Let's split that out into a separate class.
> * Dataset scanning can then use an I/O thread for the new class.
> * Longer-term, we should interface with Python's async.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)