[Feature Request]: Support Iceberg table maintenance functions

[ahmedabu98]

What would you like to happen?

Allow Beam to perform admin maintenance operations:

• DataFile compaction
• Manifest File compaction
• Delete Orphan Files
• Expire Snapshots

Start off with Java implementations then expose them as SQL table CALL procedures, similar to Spark

Issue Priority

Priority: 2 (default / most feature requests should be filed as P2)

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