Is there a way to MilvusEmbeddingRetriever to support multiple document_store?

[Silence-Well]

I have stored different data in different collections based on various sources, so I have defined multiple MilvusDocumentStores. Then, how can I retrieving from multiple document_store simultaneously in the MilvusEmbeddingRetriever? Thank you for your support. @zc277584121

retriever = MilvusEmbeddingRetriever(
    document_store=self.document_store, # How to retriever multiple document_store？
    top_k=top_k
)

[zc277584121]

@Silence-Well I think currently MilvusEmbeddingRetriever can not satisfy this requirement. Maybe the best workaround is to subclass the class MilvusEmbeddingRetriever , and then override and implement your costomized logic in it.

[Silence-Well]

My current solution is to define two MilvusEmbeddingRetriever instances and add them to the pipeline. Finally, merge the two sets of results, documents, into one docs, which can indirectly solve this problem.

[zc277584121]

Good, that is also a nice solution.