Adaptive replica selection in ES version 8

Hi

Does anyone know what adaptive replica selection mean?

Below was extracted from

Search and get requests are now routed to shards using adaptive replica selection by default.

Details
Elasticsearch will no longer prefer using shards in the same location (with the same awareness attribute values) to process _search and _get requests. Adaptive replica selection (activated by default in this version) will route requests more efficiently using the service time of prior inter-node communications.

8.x is not released yet, check out https://www.elastic.co/guide/en/elasticsearch/reference/current/search-shard-routing.html#search-adaptive-replica instead.

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