Joris Van den Bossche created ARROW-8733: --------------------------------------------
Summary: [C++][Dataset][Python] ParquetFileFragment should provide access to parquet FileMetadata Key: ARROW-8733 URL: https://issues.apache.org/jira/browse/ARROW-8733 Project: Apache Arrow Issue Type: Improvement Components: C++, Python Reporter: Joris Van den Bossche Fix For: 1.0.0 Related to ARROW-8062 (as there we will also need a way to expose the global FileMetadata). But independently, it would be useful to get access to the FileMetadata on each {{ParquetFileFragment}} (eg to get access to the statistics). This would be relatively simple to code on the Python/R side, since we have access to the file path, and could read the metadata from the file backing the fragment, and return this as a FileMetadata object. I am wondering if we want to integrate this with ARROW-8062, since when the fragments were created from a {{_metadata}} file, a {{ParquetFileFragment.metadata}} attribute would not need to read it from the parquet file in this case, but from the global metadata (at least for eg the row group data). Another question: what for a ParquetFileFragment that maps to a single row group? -- This message was sent by Atlassian Jira (v8.3.4#803005)