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#40216-Replacing nested foreach with array union (+) to reduce time complexity #40217

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@senthilengg senthilengg commented Oct 4, 2025 •
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Description (*)

  1. Moving $this->getEntity()->getEntityIdField(); lookup outside of the foreach
  2. Processing the result of select query and preparing [product_id => [attribute_code => value, attribute_code1 => value1]]
  3. Calling _setItemAttributeValue only once per $selectGroups instead of per $selectGroups, per attribute and per product
  4. Return same response as the original function

Fixed Issues (if relevant)

  1. Fixes magento/magento2 Time complexity of _loadAttributes in Eav\Model\Entity\Collection\AbstractCollection increases with number of products in cart and attributes #40216

Manual testing scenarios (*)

  1. Check all areas thats hitting the EAV

Result

Without this PR - Too many calls to _setItemAttributeValue function
image

With PR - Only one call to _setItemAttributeValue function
image

Additional Questions

Since array_replace is memory intensive for large array would it benefit over all or not ?
array union (+) seems to be memory optimised and used here

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m2-assistant bot commented Oct 4, 2025

Hi @senthilengg. Thank you for your contribution!
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Failed to run the builds. Please try to re-run them later.

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@magento run unit Tests

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@magento run Database Compare,Functional Tests CE,Functional Tests EE,Functional Tests B2B,Integration Tests,Magento Health Index,Sample Data Tests CE,Sample Data Tests EE,Sample Data Tests B2B,Static Tests,WebAPI Tests,Semantic Version Checker

@senthilengg senthilengg changed the title #40216-Replacing nested foreach with array_replace to reduce time complexity #40216-Replacing nested foreach with array_union to reduce time complexity Oct 4, 2025
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@magento run Functional Tests CE,Static Tests,WebAPI Tests

@senthilengg senthilengg changed the title #40216-Replacing nested foreach with array_union to reduce time complexity #40216-Replacing nested foreach with array union (+) to reduce time complexity Oct 4, 2025
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@magento run Functional Tests EE,Functional Tests B2B,Integration Tests

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@magento run Functional Tests CE

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@magento run WebAPI Tests

@engcom-Hotel engcom-Hotel added the Priority: P2 A defect with this priority could have functionality issues which are not to expectations. label Oct 7, 2025
@github-project-automation github-project-automation bot moved this to Pending Review in Pull Requests Dashboard Oct 7, 2025
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@magento run WebAPI Tests

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@magento run WebAPI Tests

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@magento run all tests

@engcom-Hotel engcom-Hotel linked an issue Oct 13, 2025 that may be closed by this pull request
Time complexity of _loadAttributes in Eav\Model\Entity\Collection\AbstractCollection increases with number of products in cart and attributes #40216
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@magento run all tests

@engcom-Hotel engcom-Hotel self-requested a review October 14, 2025 06:42
@engcom-Hotel engcom-Hotel moved this from Pending Review to Review in Progress in Pull Requests Dashboard Oct 14, 2025
@ct-prd-projects-boards-automation ct-prd-projects-boards-automation bot moved this to Review in Progress in Community Dashboard Oct 15, 2025
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@magento run Unit Tests, WebAPI Tests, Static Tests

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@magento run all tests

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engcom-Hotel approved these changes Oct 16, 2025
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Thank you @senthilengg for making the changes.

Failed tests seems flaky to me, hence approving this PR.

@ct-prd-projects-boards-automation ct-prd-projects-boards-automation bot moved this from Review in Progress to Ready for Testing in Community Dashboard Oct 16, 2025
@engcom-Bravo engcom-Bravo added the Triage: Dev.Experience Issue related to Developer Experience and needs help with Triage to Confirm or Reject it label Oct 16, 2025
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@magento run all tests

@engcom-Dash engcom-Dash self-assigned this Oct 23, 2025
@ct-prd-projects-boards-automation ct-prd-projects-boards-automation bot moved this from Ready for Testing to Testing in Progress in Community Dashboard Oct 23, 2025
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Hi @senthilengg
Thanks for the collaboration & contribution!

✔️ QA Passed

Preconditions:
Install fresh Magento 2.4-develop

Manual testing scenarios

  1. Create 3 attributes with type text-field.
  2. Create attribute-set and assign above attributes to this attribute-set.
  3. Create 3 products with the same attribute-set created above.
  4. Add all the products to the cart from frontend.
  5. Access the shopping cart page.
  6. Check how many times _setItemAttributeValue function is called

Before: ✖️
image

Count 32

After: ✔️image

Count 1

Builds are failed. Hence, moving this PR to Extended Testing.

Thanks.

@engcom-Dash engcom-Dash moved this from Testing in Progress to Extended testing (optional) in Community Dashboard Oct 24, 2025
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@magento run Functional Tests B2B, Functional Tests EE, Static Tests

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@magento run all tests

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@magento run Functional Tests B2B, Functional Tests EE, Functional Tests CE

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@magento run Functional Tests B2B, Functional Tests EE

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The consistent failures in Functional EE and B2B are known issues and JIRA is open for the same. The other failures are inconsistent and flaky. They neither part of the PR nor failing because of the PR changes.

EE
Build 1
https://public-results-storage-prod.magento-testing-service.engineering/reports/magento/magento2/pull/40217/5ddfb4169b09482c8e888528d73d33ec/Functional/allure-report-ee/index.html
image
Build 2
https://public-results-storage-prod.magento-testing-service.engineering/reports/magento/magento2/pull/40217/9a3fdce9ba6885ee62ef030c6a1d557b/Functional/allure-report-ee/index.html
image

B2b
Build 1
https://public-results-storage-prod.magento-testing-service.engineering/reports/magento/magento2/pull/40217/86334dbb50f7434e9e2b1469eda74b89/Functional/allure-report-b2b/index.html
image
Build 2
https://public-results-storage-prod.magento-testing-service.engineering/reports/magento/magento2/pull/40217/b4812d33b2a6a78a43390e22de5afe88/Functional/allure-report-b2b/index.html#categories/bdbf199525818fae7a8651db9eafe741
image
Known Issue
StorefrontPersistentCartCheckoutAfterSessionExpireLoginAndOrderTest ACQE-8907

Hence, Moving this PR Merge In Progress

@engcom-Dash engcom-Dash moved this from Extended testing (optional) to Merge in Progress in Community Dashboard Oct 27, 2025
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@engcom-Hotel engcom-Hotel engcom-Hotel approved these changes

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Priority: P2 A defect with this priority could have functionality issues which are not to expectations. Progress: testing in progress Project: Community Picked PRs upvoted by the community Triage: Dev.Experience Issue related to Developer Experience and needs help with Triage to Confirm or Reject it

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Time complexity of _loadAttributes in Eav\Model\Entity\Collection\AbstractCollection increases with number of products in cart and attributes

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@senthilengg @engcom-Hotel @engcom-Dash @engcom-Bravo @engcom-Charlie