[SERVER-5105] explain does not load full documents if unnecessary for matching Created: 27/Feb/12 Updated: 15/Aug/12 Resolved: 27/Feb/12 |
|
| Status: | Closed |
| Project: | Core Server |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Improvement | Priority: | Major - P3 |
| Reporter: | Aaron Staple | Assignee: | Unassigned |
| Resolution: | Done | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Participants: |
| Description |
|
If a match can be done with the index only, explain does not read the full document. This is in contrast to a normal query, which generally reads the full document unless a covered index query is being performed. This discrepancy can result in the explain query running much faster than a corresponding normal query in some cases. |
| Comments |
| Comment by Eliot Horowitz (Inactive) [ 27/Feb/12 ] |
|
this is as we want it. |