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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