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Posted to jira@arrow.apache.org by "Ben Kietzman (Jira)" <ji...@apache.org> on 2021/02/26 17:49:00 UTC

[jira] [Created] (ARROW-11797) [C++][Dataset] Provide Scanner methods to yield/visit scanned batches

Ben Kietzman created ARROW-11797:
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             Summary: [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
             Fix For: 4.0.0


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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