Info

During explain with execution stats for $unionWith, it looks we are not expanded the view definition of the sub-pipeline. The SERVER-88810 attempted to fix this for Sharded views by try catching the CommandOnShardedViewNotSupportedOnMongod, but this exception does not get throw for non-sharded views. So the view resolution never happens. The sub-pipeline execution is still happening on the correct namespace but without the prefix pipeline from the view definition

Top User Comments

nicholas.zolnierz commented on Thu, 12 Dec 2024 15:36:40 +0000: Thanks arun.banala@mongodb.com, this is related to a few other known issues of explain of $unionWith pipelines. Sending to backlog for now but if the linked timeseries bug needs more immediate attention let me know and we can try to get this scheduled.

Steps to Reproduce