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@alamb alamb commented Nov 1, 2025

Targets this PR:

(merging this PR will update apache#8733)

Per comments from myself and @tustvold https://github.com/apache/arrow-rs/pull/8733/files#r2479110401 the notion of a synthetic page in the reader is somewhat confusing.

Thus I propose removing that notion. I did so and all tests seem to still pass, we'll see if I can get a clean CI run here

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tustvold commented Nov 1, 2025

The fact the tests pass would imply that we don't have good enough test coverage for the situation where the adapative pushdown logic expands the selections to cover pages that aren't technically required...

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alamb commented Nov 3, 2025

Yes, I am thinking it is time for a fuzz test with a file with a bunch of small pages and applies filters to one column and selects another

@hhhizzz hhhizzz force-pushed the rowselectionempty branch 2 times, most recently from 8742cd1 to 5e81ee4 Compare November 5, 2025 18:15
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3 participants