morrySnow opened a new pull request, #12483:
URL: https://github.com/apache/doris/pull/12483
# Proposed changes
In an earlier PR #11976 , we add shuffle join and bucket shuffle support.
But if join's right child's distribution spec satisfied join's require, we do
not add distribute on right child. Instead of, do it in plan translator.
It is hard to calculate accurate cost in this way, since we some distribute
cost do not calculated.
In this PR, we introduce a new shuffle type BUCKET, and change the way of
add enforce to ensure all necessary distribute will be added in cost and
enforcer job.
## Problem summary
Describe your changes.
## Checklist(Required)
1. Does it affect the original behavior:
- [ ] Yes
- [ ] No
- [ ] I don't know
2. Has unit tests been added:
- [ ] Yes
- [ ] No
- [ ] No Need
3. Has document been added or modified:
- [ ] Yes
- [ ] No
- [ ] No Need
4. Does it need to update dependencies:
- [ ] Yes
- [ ] No
5. 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
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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