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https://issues.apache.org/jira/browse/ARROW-9299?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17331665#comment-17331665
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Ying Zhou commented on ARROW-9299:
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See https://issues.apache.org/jira/browse/ARROW-12535
> [Python] Expose ORC metadata() in Python ORCFile
> ------------------------------------------------
>
> Key: ARROW-9299
> URL: https://issues.apache.org/jira/browse/ARROW-9299
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++, Python
> Affects Versions: 0.17.1
> Reporter: Jeremy Dyer
> Assignee: Ying Zhou
> Priority: Major
> Labels: orc
>
> There is currently no way for a user to directly access the underlying ORC
> metadata of a given file. It seems the C++ functions and objects already
> existing and rather the plumbing is just missing the the cython/python and
> potentially a few c++ shims. Giving users the ability to retrieve the
> metadata without first reading the entire file could help numerous
> applications to increase their query performance by allowing them to
> intelligently determine which ORC stripes should be read.
> This would allow for something like
> {code:java}
> import pyarrow as pa
> orc_metadata = pa.orc.ORCFile(filename).metadata()
> {code}
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