Hi Yingjie Li,

The latest janusgraph-1.0.0-rc2 ships with elasticsearch-rest-client 8.6. According to the OpenSearch docs, the latest opensearch versions should be compatible with that. What goes wrong when you try and connect a janusgraph instance with your opensearch-2.5 cluster?

I assume that you do not need to replace the elasticsearch-rest-client, because AFAICS this is still APL2 licensed.

Note that replacing individual jars in a binary distrbution is not a good idea, because the new config was never tested during a build. Even if only applying minor updates in the sense of semantic versioning, things can and will break in practice.

Best wishes,   Marc