This documentation contains work-in-progress information for future Elastic Stack and Cloud releases. Use the version selector to view supported release docs. It also contains some Elastic Cloud serverless information. Check out our serverless docs for more details.
Reindex before upgrading
editReindex before upgrading
editBefore upgrading to Elasticsearch 8.0 and later, you must reindex any indices created in a 6.x version. We recommend using the Upgrade Assistant to guide you through this process.
For more information about upgrading, refer to Upgrading to Elastic 8.16.0.
For more information about reindexing, refer to Reindex.