MDVA-40550: Products missing on the frontend after reindexing

The MDVA-40550 patch solves the issue where reindexing results in some or all of storefront categories missing products. This patch is available when the Quality Patches Tool (QPT) 1.1.6 is installed. The patch ID is MDVA-40550. Please note that the issue is scheduled to be fixed in Adobe Commerce 2.4.4.

Affected products and versions

The patch is created for Adobe Commerce version:

• Adobe Commerce (all deployment methods) 2.4.2-p1

Compatible with Adobe Commerce versions:

• Adobe Commerce (all deployment methods) 2.3.5 - 2.4.3-p1

Issue

Steps to reproduce:

1. Create a product.

2. Switch indexers to Update by schedule.

   • Assign the product to a category.

3. Enable xdebug and make xdebug breakpoint in \Magento\Indexer\Model\Indexer::reindexAll and \Magento\Indexer\Model\IndexMutex::execute.

4. Run a full reindex of catalog_category_product with the command:

   bin/magento indexer:reindex catalog_category_product
   

   • Wait for the execution to stop on the breakpoint \Magento\Indexer\Model\Indexer::reindexAll.

5. In another console, run a partial reindex in parallel with the command:

   bin/magento cron:run --group=index --bootstrap=standaloneProcessStarted=1
   

6. Wait for the execution to stop on the breakpoint \Magento\Indexer\Model\IndexMutex::execute. It will lock the catalog_category_product indexer.

7. Resume execution of the full reindex of catalog_category_product and wait for a lock timeout (60 seconds).

Expected results:

No error messages in console.

Actual results:

You get the following error:

Could not acquire lock for index: catalog_category_product.

Apply the patch

To apply individual patches, use the following links depending on your deployment method:

• Adobe Commerce or Magento Open Source on-premises: Software Update Guide > Apply Patches in our developer documentation.
• Adobe Commerce on cloud infrastructure: Upgrades and Patches > Apply Patches in our developer documentation.

Related reading

To learn more about Quality Patches Tool, refer to:

• Quality Patches Tool released: a new tool to self-serve quality patches in our support knowledge base.
• Check if patch is available for your Adobe Commerce issue using Quality Patches Tool in our support knowledge base.

For info about other patches available in QPT, refer to Patches available in QPT in our developer documentation.