[SERVER-46916] Make misc. map reduce performance improvements Created: 17/Mar/20 Updated: 29/Oct/23 Resolved: 06/Apr/20 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | 4.4.0-rc2, 4.7.0 |
| Type: | Task | Priority: | Major - P3 |
| Reporter: | Eric Cox (Inactive) | Assignee: | Ian Boros |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | qexec-team | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Issue Links: |
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| Backwards Compatibility: | Fully Compatible | ||||||||||||||||||||||||
| Backport Requested: |
v4.4
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| Sprint: | Query 2020-03-23, Query 2020-04-06, Query 2020-04-20 | ||||||||||||||||||||||||
| Participants: | |||||||||||||||||||||||||
| Linked BF Score: | 0 | ||||||||||||||||||||||||
| Description |
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There are a few opportunities for optimization in the special map reduce expressions that could give a 25-30% performance improvement for the map reduce sysperf workloads. |
| Comments |
| Comment by Githook User [ 10/Apr/20 ] |
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Author: {'name': 'Ian Boros', 'email': 'ian.boros@mongodb.com', 'username': 'puppyofkosh'}Message: (cherry picked from commit 1fa4585c079fe392650258f0654df64d29678af4) |
| Comment by Ian Boros [ 06/Apr/20 ] |
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Re-purposing this ticket to be about misc. map reduce improvements. I moved+expanded on the original description in SERVER-47370.
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| Comment by Githook User [ 06/Apr/20 ] |
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Author: {'name': 'Ian Boros', 'email': 'ian.boros@mongodb.com', 'username': 'puppyofkosh'}Message: |
| Comment by Eric Cox (Inactive) [ 31/Mar/20 ] |
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My initial patch that disabled the project pushdown showed a 30% - 40% gain over the current regressions. |