[SERVER-42104] add flag to query result document indicating a COLSCAN was necessary Created: 03/Jul/19  Updated: 06/Dec/22  Resolved: 31/Jul/19

Status: Closed
Project: Core Server
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: New Feature Priority: Major - P3
Reporter: Marco Ellwanger Assignee: Backlog - Query Team (Inactive)
Resolution: Duplicate Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Duplicate
duplicates SERVER-1812 Add the ability to get query results ... Backlog
Related
related to SERVER-1812 Add the ability to get query results ... Backlog
Assigned Teams:
Query
Participants:

 Description   

Currently the only way to detect COLSCANs is either to run an explain before or to parse the logs. The only way to disable COLSCANs is on the database level via a flag. If we had an indication on the query result that a COLSCAN occurred, then flexible handling  on a case-by-case basis depending on other metrics would be much easier than having to sift through the logs on a regular basis after the fact. The driver should know that information for each query after execution anyways, why not expose it? Thanks



 Comments   
Comment by Craig Homa [ 31/Jul/19 ]

Closing as this is confirmed to be a duplicate of SERVER-1812.

Comment by Danny Hatcher (Inactive) [ 08/Jul/19 ]

Thanks for the feature request. I'll forward it on to our Query team to take a look.

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