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https://issues.apache.org/jira/browse/IMPALA-14853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Peter Rozsa reassigned IMPALA-14853:
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Assignee: Peter Rozsa
> Add support for credential vending via Iceberg REST Catalogs
> ------------------------------------------------------------
>
> Key: IMPALA-14853
> URL: https://issues.apache.org/jira/browse/IMPALA-14853
> Project: IMPALA
> Issue Type: New Feature
> Components: Backend, Frontend
> Reporter: Zoltán Borók-Nagy
> Assignee: Peter Rozsa
> Priority: Major
> Labels: impala-iceberg
>
> Iceberg REST catalogs have a feature called "credential vending". Via this
> mechanism the Iceberg REST server can hand out temporary storage credentials
> (e.g. S3 access keys or tokens) to the clients with which they can access the
> underlying storage.
> Impala should be able to utilize these temporary credentials:
> * get vended credentials from Iceberg REST server during query planning
> * distribute credentials to the executors in the query plan
> * Backend IO layer should be able to read files with provided credentials
> It's possible that Impala is configured with multiple REST Catalogs, and it
> needs to read multiple tables from different catalogs in a single query. To
> make this scenario work, vended credentials need to be associated with
> tables/scans operators.
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