[SERVER-8664] Improve query optimizer sampling algorithm Created: 22/Feb/13 Updated: 14/May/15 Resolved: 14/May/15 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Querying |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Improvement | Priority: | Major - P3 |
| Reporter: | Daniel Pasette (Inactive) | Assignee: | Unassigned |
| Resolution: | Won't Fix | Votes: | 0 |
| Labels: | query_triage | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Issue Links: |
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| Description |
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Use a sample of different ranges from within each candidate index range to smooth out the possibility of choosing bad indexes based on data distribution anomalies. |
| Comments |
| Comment by Daniel Pasette (Inactive) [ 14/May/15 ] |
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Likely moving towards using statistics, so not going to go this route. |