[COMPASS-2963] sequence of actions causes compass to go into 100% CPU usage and not respond Created: 25/Jun/18  Updated: 29/Oct/23  Resolved: 26/Jun/18

Status: Closed
Project: Compass
Component/s: Aggregation pipeline
Affects Version/s: 1.15.0
Fix Version/s: 1.14.0, 1.15.0

Type: Bug Priority: Major - P3
Reporter: Asya Kamsky Assignee: Durran Jordan
Resolution: Fixed Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Attachments: Text File Sample of MongoDB Compass Isolated Edition Beta Helper.txt     PNG File Screenshot 2018-06-25 19.35.31.png    
Sprint: Sprint Z

 Description   

On MacOS, new pipeline, added a $match stage, fine.
Went to add $group stage. Filled in field for _id <<expression>> now before doing anything else delete from comma back over the _id field. Every time it froze after the third character was deleted (so comma, closing quote and 'e'). See screenshot for exact entry.

Also attaching sample from Activity monitor - it seem to run at 100+% indefinitely (I killed it after 25 minutes the first time and decided it's never going to come back).


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