[regression] - Adding indexing options in the createCollection remove idempotence

[clun]

Previously this request could be executed multiple times without errors:

{"createCollection":{"name":"collection_vector","options":{"vector":{"dimension":14,"metric":"cosine"}}}}

Will get you all the time.

{"status":{"ok":1}}

With the indexing options the behaviour is now different:

{"createCollection":{"name":"collection_vector","options":{"vector":{"dimension":14,"metric":"cosine"},"indexing":{"deny":["blob_body"]}}}}

=> {"status":{"ok":1}}

{"createCollection":{"name":"collection_vector","options":{"vector":{"dimension":14,"metric":"cosine"},"indexing":{"deny":["blob_body"]}}}}

=> {"errors":[{"message":"The provided collection name 'collection_vector' already exists with a different vector setting.","errorCode":"INVALID_COLLECTION_NAME"}]}

[tatu-at-datastax]

Thank you for reporting this @clun . I will have a look.

[tatu-at-datastax]

Yes, I can reproduce this with IT (#836); working on a fix.