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Posted to issues@arrow.apache.org by "Ben Kietzman (Jira)" <ji...@apache.org> on 2020/10/30 20:21:00 UTC

[jira] [Created] (ARROW-10435) [C++][Dataset][Python] Improve ParquetFileFragment serialization

Ben Kietzman created ARROW-10435:
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             Summary: [C++][Dataset][Python] Improve ParquetFileFragment serialization
                 Key: ARROW-10435
                 URL: https://issues.apache.org/jira/browse/ARROW-10435
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
    Affects Versions: 2.0.0
            Reporter: Ben Kietzman
            Assignee: Ben Kietzman
             Fix For: 3.0.0


After ARROW-10131 {{ParquetFileFragment}} wraps a FileMetaData, from which all its properties are queried. FileMetaData is emminently serializable, so when pickling a fragment with pre-loaded metadata it would save redundant IO to just serialize the metadata. (An unpickled fragment would then also have pre-loaded metadata.)

https://github.com/apache/arrow/pull/8507#discussion_r512698380



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