englefly opened a new pull request, #13990:
URL: https://github.com/apache/doris/pull/13990
# Proposed changes
Doris generates RFs (runtime filter) on Join node to reduce the probe table
at scan stage. But some RFs have no effect, because its selectivity is 100%.
This pr will remove them.
A RF is effective if
1. the build column value range covers part of that of probe column, OR
2. the build column ndv is less than that of probe column, OR
3. the build column's ColumnStats.selectivity < 1, OR
4. the build column is reduced by another RF, which satisfies above
criterions.
Issue Number: close #xxx
## Problem summary
Describe your changes.
## Checklist(Required)
1. Does it affect the original behavior:
- [ ] Yes
- [ ] No
- [ ] I don't know
5. Has unit tests been added:
- [ ] Yes
- [ ] No
- [ ] No Need
6. Has document been added or modified:
- [ ] Yes
- [ ] No
- [ ] No Need
7. Does it need to update dependencies:
- [ ] Yes
- [ ] No
8. Are there any changes that cannot be rolled back:
- [ ] Yes (If Yes, please explain WHY)
- [ ] No
## Further comments
If this is a relatively large or complex change, kick off the discussion at
[[email protected]](mailto:[email protected]) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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