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https://issues.apache.org/jira/browse/ARROW-15552?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Pitrou resolved ARROW-15552.
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Fix Version/s: 8.0.0
Resolution: Fixed
Issue resolved by pull request 12361
[https://github.com/apache/arrow/pull/12361]
> [Docs][Format] Unclear wording about base64 encoding requirement of metadata
> values
> -----------------------------------------------------------------------------------
>
> Key: ARROW-15552
> URL: https://issues.apache.org/jira/browse/ARROW-15552
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Documentation, Format
> Reporter: Joris Van den Bossche
> Assignee: Antoine Pitrou
> Priority: Major
> Labels: pull-request-available
> Fix For: 8.0.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> The C Data Interface docs indicate that the values in key-value metadata
> should be base64 encoded, which is mentioned in the section about which
> key-value metadata to use for extension types
> (https://arrow.apache.org/docs/format/CDataInterface.html#extension-arrays):
> bq. The base64 encoding of metadata values ensures that any possible
> serialization is representable.
> This might not be fully correct, though (or at least not required, which is
> implied with the current wording). While a binary blob (like a serialized
> schema) can be base64 encoded, as we do when putting the Arrow schema in the
> Parquet metadata, this is not required?
> cc [~apitrou]
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