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Suppress RM_APPEND_ONLY_ID WAL records for offloaded AO/AOCS tables - #454
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Prevents generation of RM_APPEND_ONLY_ID WAL records for append-optimized tables with the offloaded storage option enabled. The change covers INSERT, TRUNCATE, and ALTER TABLE ADD COLUMN operations on both row-oriented and column-oriented AO tables. A new helper function RelationNeedsRMAO is introduced to check whether a relation requires append-only WAL logging, returning false when the offloaded reloption is set. Tests verify that normal AO/AOCS tables continue to produce these WAL records while offloaded tables do not, including dynamic toggling of the offloaded option at runtime.