Does Magento 2.4.3 run on OpenSearch 3?
NoNone of the 4 Magento 2.4.3 releases we tested install on OpenSearch 3. This release indexes through mapping-type endpoints that the search engine has removed, so installs succeed but saving a product fails. The newest Magento release that installs on OpenSearch 3 is 2.4.9. Adobe lists Elasticsearch 7.9.3 for 2.4.3-p3.
Last run 3 October 2026. Each run is the stack Adobe recommends for the release with only the search swapped for OpenSearch 3, installed in Docker, compiled and put through storefront, checkout and admin browser tests.
Every Magento 2.4.3 release on OpenSearch 3
Each cell links to the release page with every setup and run log.
Why it failed
This release indexes through mapping-type endpoints that the search engine has removed, so installs succeed but saving a product fails.
Stopped at compile on base, p1, p2, p3.
Other search versions for Magento 2.4.3
OpenSearch 3 on other Magento lines
See every Magento and Mage-OS release on OpenSearch 3, orevery setup for Magento 2.4.3-p3.