AWS adds parallel validation and rollback for OpenSearch upgrades

Published Tuesday, November 10, 2026 · 12:15 PM EST

Amazon OpenSearch Service now supports upgrades that copy an existing cluster into a second cluster running the new version, AWS announced. The original cluster continues serving workloads while operators run queries against both versions and compare performance through Amazon CloudWatch metrics. Operators can cancel before switching or retain the previous version for a chosen period and roll back during that window. The feature supports OpenSearch 1.1 or later and Elasticsearch 7.10 in supported AWS Commercial Regions, excluding Asia Pacific regions in New Zealand, Taipei and Thailand, and Mexico Central.

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