Add selective index updates (n/m) to the heap table AM#23

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gburd wants to merge 39 commits intomasterfrom

Commits on Apr 7, 2026

Rebase on upstream hourly, add AI/LLM PR review

gburd
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dev setup v27
gburd
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Add tests to cover a variety of heap HOT update behaviors
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Identify modified indexed attributes in the executor on UPDATE
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Use ii_IndexUnchanged for hint rather than expression checking
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Replace TU_UpdateIndexes enum with per-index bitmapset tracking
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Add t_infomask2 bit for HOT selective index updates

gburd
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nathan-bossart
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Add redirect line pointer infrastructure for HOT selective index updates

gburd
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nathan-bossart
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Add indexed attribute tracking infrastructure for HOT selective index updates

gburd
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nathan-bossart
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Implement HOT chain traversal in heap access methods

gburd
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nathan-bossart
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Integrate HOT selective index updates with index and constraint checking

gburd
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nathan-bossart
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Commits on Apr 8, 2026