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storage/pg: only report snapshot size error in strict mode #32441

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Merged
merged 1 commit into from
Jun 4, 2025

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petrosagg
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Our default snapshot size determination strategy is to use the table statistics in pg instead of performing a SELECT COUNT(*) on the table.

This saves resources from the upstream database since it only reads a couple of rows from the statistics table at the expense of accuracy.

This PR silences an error that only makes sense when the COUNT(*) strategy is used.

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  • This PR has adequate test coverage / QA involvement has been duly considered. (trigger-ci for additional test/nightly runs)
  • This PR has an associated up-to-date design doc, is a design doc (template), or is sufficiently small to not require a design.
  • If this PR evolves an existing $T ⇔ Proto$T mapping (possibly in a backwards-incompatible way), then it is tagged with a T-proto label.
  • If this PR will require changes to cloud orchestration or tests, there is a companion cloud PR to account for those changes that is tagged with the release-blocker label (example).
  • If this PR includes major user-facing behavior changes, I have pinged the relevant PM to schedule a changelog post.

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def- commented May 8, 2025

@petrosagg petrosagg force-pushed the snapshot-size-error branch from 1eea7fc to c07cc68 Compare May 9, 2025 09:25
@petrosagg petrosagg force-pushed the snapshot-size-error branch 2 times, most recently from b3fb9aa to 7747e65 Compare June 4, 2025 09:44
@petrosagg petrosagg marked this pull request as ready for review June 4, 2025 09:44
@petrosagg petrosagg requested a review from a team as a code owner June 4, 2025 09:44
Our default snapshot size determination strategy is to use the table
statistics in pg instead of performing a `SELECT COUNT(*)` on the table.

This saves resources from the upstream database since it only reads a
couple of rows from the statistics table at the expense of accuracy.

This PR silences an error that only makes sense when the `COUNT(*)`
strategy is used.

Signed-off-by: Petros Angelatos <[email protected]>
@petrosagg petrosagg force-pushed the snapshot-size-error branch from 7747e65 to c6c2802 Compare June 4, 2025 09:54
@petrosagg petrosagg enabled auto-merge June 4, 2025 09:57
@petrosagg petrosagg merged commit 3eb656c into MaterializeInc:main Jun 4, 2025
82 checks passed
@petrosagg petrosagg deleted the snapshot-size-error branch June 4, 2025 10:40
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3 participants