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Posted to dev@arrow.apache.org by "Ben Kietzman (Jira)" <ji...@apache.org> on 2020/03/19 15:42:00 UTC

[jira] [Created] (ARROW-8163) [C++][Dataset] Allow FileSystemDataset's file list to be lazy

Ben Kietzman created ARROW-8163:
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             Summary: [C++][Dataset] Allow FileSystemDataset's file list to be lazy
                 Key: ARROW-8163
                 URL: https://issues.apache.org/jira/browse/ARROW-8163
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++, C++ - Dataset
    Affects Versions: 0.16.0
            Reporter: Ben Kietzman
            Assignee: Ben Kietzman
             Fix For: 1.0.0


A FileSystemDataset currently requires a full listing of files it contains on construction, so a scan cannot start until all files in the dataset are discovered. Instead it would be ideal if a large dataset could be constructed with a lazy file listing so that scans can start immediately.



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