Failure when creating Euclidean/Cosine hnsw indexes

[Danny Myers]

I'm getting an error when I try to create Euclidean/Cosine hnsw indexes. The ann_manhattan_ops index seems to work fine.

Steps to reproduce

These fail:

CREATE INDEX ON documents USING hnsw(embedding) WITH (dims=384, m=3, efconstruction=5, efsearch=5);
CREATE INDEX ON documents USING hnsw(embedding ann_cos_ops) WITH (dims=384, m=3, efconstruction=5, efsearch=5);

This works:

CREATE INDEX ON documents USING hnsw(embedding ann_manhattan_ops) WITH (dims=384, m=3, efconstruction=5, efsearch=5);

Expected result

Index created

Actual result

[XX000] ERROR: Function is not supported by HNSW inodex

Environment

Postgres 15 Docker

Logs, links

Happy to provide this with guidance on what you need.