[Parquet] Avoid fetching multiple pages when the predicate cache is disabled#8554
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alamb merged 1 commit intoapache:mainfrom Oct 7, 2025
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Thank you @nuno-faria -- this looks very great to me
| .unwrap(); | ||
| let parquet_schema = metadata.file_metadata().schema_descr_ptr(); | ||
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| // the filter is not clone-able, so we use a lambda to simplify |
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yeah, this is something that makes the filters very tricky to handle internally. Nothing to change for this PR, I am just observing
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FYI @XiangpengHao |
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Looks good to me, thank you @nuno-faria
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Thanks again @nuno-faria and @XiangpengHao |
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Which issue does this PR close?
max_predicate_cache_sizeis 0 #8542.Rationale for this change
When the
max_predicate_cache_sizeis set to 0 there is no need to select multiple data pages untilbatch_sizeis reached.What changes are included in this PR?
ReaderFactory::compute_cache_projectionreturnNoneif the cache is disabled, which will end up not retrieving multiple pages unnecessarily.Are these changes tested?
Yes.
Are there any user-facing changes?
No.