Hi @asfoorial ,
It looks like to make the plugin extensible, the k-NN plugin would need to implement the ExtensiblePlugin interface.
There is no a reason (I know of) why we shouldn’t be able to implement this interface, but I need to look into what this would require a little bit closer. I will create an issue on the Github repo and move discussion over to there.
Side note: jni is changing in the 1.2 release. I am planning on updating developer guide with better instructions. Sorry for the inconvenience when building.
Jack