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Posted to issues@arrow.apache.org by "Ben Kietzman (Jira)" <ji...@apache.org> on 2020/08/14 21:47:00 UTC

[jira] [Created] (ARROW-9749) [C++][Dataset] Extract format-specific scan options from FileFormat

Ben Kietzman created ARROW-9749:
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             Summary: [C++][Dataset] Extract format-specific scan options from FileFormat
                 Key: ARROW-9749
                 URL: https://issues.apache.org/jira/browse/ARROW-9749
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
    Affects Versions: 1.0.0
            Reporter: Ben Kietzman
             Fix For: 2.0.0


Currently format specific scan options are embedded as members of the corresponding subclass of FileFormat. Extracting these to an options struct would provide better separation of concerns; currently the only way to scan a parquet formatted dataset with different options is to reconstruct it in a differently optioned format from its component files.

CsvFileFormat could retain ParseOptions as a member, since (for example) tab-separated vs comma-separated values can justifiably be considered different formats.



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