<ul><li>Adaptive replica selection is a mechanism designed to improve query response times and alleviate strain on overloaded OpenSearch nodes.</li><li>It ensures that nodes experiencing delays due to issues like hardware, network, or configuration problems do not slow down the overall query process.</li><li>Enabling adaptive replica selection prioritizes nodes with better response times and avoids sending shard requests to struggling nodes unless no other replicas are available.</li><li>This feature is enabled by default in OpenSearch, but can also be manually activated using the provided API request.</li></ul>

Adaptive Replica Selection in OpenSearch

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