Support OpenSearch

[v1ack]

I propose adding support for OpenSearch in addition to Elasticsearch. Since OpenSearch maintains a high degree of compatibility with Elasticsearch APIs — including the Python client API — we can achieve this by implementing compatibility logic to switch between the elasticsearch or opensearch-py library, depending on an environment variable.

This approach would allow us to support both platforms with minimal changes to the existing codebase.

I am happy to create a merge request to implement this if the team agrees.

[v1ack]

@jkhenning hello, can you comment that?
Or mention someone who can?

[jkhenning]

Hi @v1ack, sorry for the delay.

There's actually an issue with supporting OpenSearch as we're currently working on features that use new ElasticSearch features that are not supported by OpenSearch...

[v1ack]

Is it additional functional or changes in core ClearML logic?
Is it possible to make a fallback to the functions supported by the OS?