Query consistency [not_bounded] when Index node run out of memory


Is it normaly for the default non_bounded consistency check to not even check the Index node run out of memory?
I understand to not check the location or data of the index by it should return an error if the Index Node is not available. (or at least configurable)

(I am aware of atPlus)


Query optimizer consider all the indexes that have status ONLINE. If any one of the index qualifies it uses that index. If non of the indexes available it returns error.

If no index node available it return error (Except when query uses USE KEYS which is not required)