Hi team,
Which logs provide the user details which dropped the particular index?
You have to have auditing enabled to capture such an event’s details.
https://docs.couchbase.com/server/current/n1ql/n1ql-language-reference/n1ql-auditing.html
https://docs.couchbase.com/server/current/audit-event-reference/audit-event-reference.html#query-service-event-list-table
HTH.