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Posted to jira@arrow.apache.org by "Ben Kietzman (Jira)" <ji...@apache.org> on 2021/03/10 16:07:00 UTC

[jira] [Created] (ARROW-11924) [C++] Provide streaming output from GetFileInfo

Ben Kietzman created ARROW-11924:
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             Summary: [C++] Provide streaming output from GetFileInfo
                 Key: ARROW-11924
                 URL: https://issues.apache.org/jira/browse/ARROW-11924
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
    Affects Versions: 3.0.0
            Reporter: Ben Kietzman
            Assignee: Antoine Pitrou


For situations where a monolithic call to GetFileInfo will be slow, it would be useful to immediately receive any results which *are* ready through an {{AsyncGenerator<std::vector<FileInfo>>}} or so. This is probably a prerequisite of ARROW-8163, where the goal is to begin scanning known fragments while other fragments are still being discovered.

IIUC, one concrete example would be paging through a long output from S3's ListObjectsV2.



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