zakariya-s opened a new issue, #2931:
URL: https://github.com/apache/iceberg-rust/issues/2931
### Is your feature request related to a problem or challenge?
REST catalogs can vend short-lived storage credentials for accessing table
data. Iceberg Java supports refreshing these credentials through cloud-specific
refresh endpoints before they expire.
`iceberg-rust` does not currently refresh per-prefix credentials.
Consequently, long-running reads, writes, and maintenance operations can fail
once the initial S3 or GCS credentials expire.
Refresh support must preserve per-prefix credential isolation, table-scoped
catalog authentication, and support tables referencing multiple storage
prefixes or clouds.
### Describe the solution you'd like
Add refreshable storage credential support across the REST catalog, FileIO,
and storage backends:
- Introduce a backend-independent credential-provider interface for FileIO
- Use the standard AWS and GCS refresh endpoint properties returned by
REST catalogs
- Cache credentials per cloud and select the longest matching storage
prefix
### Willingness to contribute
I can contribute to this feature independently
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