A hotfix for Magento Open Source 2.3.3 has been published to address an issue related to Elasticsearch that may present itself during or after upgrading to our latest 2.3.3 release. We strongly recommend that everyone upgrading to 2.3.3, download and apply this hotfix prior to deployment. For more information please visit our release notes. https://devdocs.magento.com/guides/v2.3/release-notes/bk-release-notes.html 