Description

Description

Lucene uses SPI to get the instance for various classes like Codec, KNNVectorsFormat etc.

Currently Codec class provide a way to reload the SPIs by providing an interface which takes a ClassLoader and reload the SPIs. Ref: https://github.com/apache/lucene/blob/branch_9_10/lucene/core/src/java/org/apache/lucene/codecs/Codec.java#L126-L137

but similar functionality is not present in the KNNVectorsFormat.(I checked main branch and branch_9_10 too). Ref: https://github.com/apache/lucene/blob/branch_9_10/lucene/core/src/java/org/apache/lucene/codecs/KnnVectorsFormat.java

I am not sure if this is a miss or there is some other way to reload the SPI of KNNVectorsFormat class.

Solution

What I am looking for here is to add the support for reload SPI function in KNNVectorsFormat class too so that external libraries/application can load their own KNNVectorsFormat.

I am willing to pick up this issue and contribute back.

@benwtrent please let me know your thoughts on this