support alibaba cloud elasticsearch

[xingshaomin]

Alibaba Cloud Elasticsearch is a fully managed cloud service that is developed based on open source Elasticsearch. This service is fully compatible with the features provided by open source Elasticsearch.

Alibaba Cloud Elasticsearch V8.0 and later provide the k-nearest neighbor (kNN) search feature. This feature can help you quickly use vector spaces to meet your business requirements in different search scenarios, such as image searching, video fingerprinting, facial recognition, speech recognition, and commodity recommendation. It uses the HNSW algorithm to support efficient kNN search. Like most kNN algorithms, HNSW is an approximate method that sacrifices result accuracy for improved search speed.

https://www.alibabacloud.com/help/en/es/use-cases/use-the-knn-search-feature-of-elasticsearch

[xingshaomin]

/assign @XuanYang-cn

[alwayslove2013]

@xingshaomin This appears to be identical to the client implementation code of Elasticloud, with the only difference being the configuration. Could we consider directly importing it?

We have a similar case that can reference, the client implementations of Milvus and ZillizCloud, aiming to maximize code reuse where possible.

[xingshaomin]

Thanks. I added a commit to reuse the code of Elasticloud.

@xingshaomin This appears to be identical to the client implementation code of Elasticloud, with the only difference being the configuration. Could we consider directly importing it?

We have a similar case that can reference, the client implementations of Milvus and ZillizCloud, aiming to maximize code reuse where possible.

[sre-ci-robot]

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