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Posted to jira@arrow.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2021/02/26 21:16:00 UTC
[jira] [Updated] (ARROW-11797) [C++][Dataset] Provide Scanner
methods to yield/visit scanned batches
[ https://issues.apache.org/jira/browse/ARROW-11797?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated ARROW-11797:
-----------------------------------
Labels: dataset pull-request-available (was: dataset)
> [C++][Dataset] Provide Scanner methods to yield/visit scanned batches
> ---------------------------------------------------------------------
>
> Key: ARROW-11797
> URL: https://issues.apache.org/jira/browse/ARROW-11797
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 3.0.0
> Reporter: Ben Kietzman
> Assignee: Ben Kietzman
> Priority: Major
> Labels: dataset, pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> From discussion in https://issues.apache.org/jira/browse/ARROW-11782
> It'd be useful to consumers of Scanner to receive an iterator of scanned record batches or apply a visitor to batches as they are scanned without handling ScanTasks. For example, this could enable aggregations or other computations which don't require the entire table to be materialized.
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