[jira] [Created] (ARROW-18386) [C++] Add support for filename, file index, and batch index columns to exec plan based scanner

["Weston Pace (Jira)" <ji...@apache.org>]

Weston Pace created ARROW-18386:
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             Summary: [C++] Add support for filename, file index, and batch index columns to exec plan based scanner
                 Key: ARROW-18386
                 URL: https://issues.apache.org/jira/browse/ARROW-18386
             Project: Apache Arrow
          Issue Type: Sub-task
          Components: C++
            Reporter: Weston Pace
            Assignee: Weston Pace


The old scanner currently appends these three fields to all outgoing batches.  In retrospect, this caused some confusion, so I'd like to handle it slightly differently, where the user is able to request these fields, but they are not automatically appended.



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