According to this post
Identifying search slow log origin
It is often useful to identify what triggered a slow running query. If a call was initiated with an
X-Opaque-IDheader, then the user ID is included in Search Slow logs as an additional id field (scroll to the right).
I can NOT find any records with "id" in them.
Am I missing anything? Missing parameter/configuration?
Or in other words
How to identify which user run the query in slowlog records?