[MDEV-29679] Optimizer Tracing for index_merge/sort_intersect Created: 2022-10-01 Updated: 2022-10-01 |
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| Status: | Open |
| Project: | MariaDB Server |
| Component/s: | None |
| Fix Version/s: | None |
| Type: | Task | Priority: | Major |
| Reporter: | Sergei Petrunia | Assignee: | Unassigned |
| Resolution: | Unresolved | Votes: | 0 |
| Labels: | None | ||
| Description |
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Optimizer Trace doesn't fully cover how index_merge/sort_intersect plans are chosen. In particular, the cost of fetching the rowids and Unique::get_use_cost() are not traced. We should add tracing. |