EmmyMiao87 opened a new pull request #5910:
URL: https://github.com/apache/incubator-doris/pull/5910
## Proposed changes
The Repeat Node will change the data partition of fragment
when the origin data partition of fragment is HashPartition.
The Repeat Node will generate some new rows.
The distribution of these new rows is completely inconsistent with the
original data distribution,
their distribution is RANDOM.
If the data distribution is not corrected,
an error will occur when the agg node determines whether to perform
colocate.
Wrong data distribution will cause the agg node to think that agg can be
colocated,
leading to wrong results.
For example, the following query can not be colocated although the
distributed column of table is k1:
```
SELECT k1, k2, SUM( k3 )
FROM tabale
GROUP BY GROUPING SETS ( (k1, k2), (k1), (k2), ( ) )
```
## Types of changes
What types of changes does your code introduce to Doris?
_Put an `x` in the boxes that apply_
- [x] Bugfix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] Documentation Update (if none of the other choices apply)
- [ ] Code refactor (Modify the code structure, format the code, etc...)
## Checklist
_Put an `x` in the boxes that apply. You can also fill these out after
creating the PR. If you're unsure about any of them, don't hesitate to ask.
We're here to help! This is simply a reminder of what we are going to look for
before merging your code._
- [x] I have created an issue on (Fix #5909) and described the bug/feature
there in detail
- [x] Compiling and unit tests pass locally with my changes
- [ ] I have added tests that prove my fix is effective or that my feature
works
- [ ] If these changes need document changes, I have updated the document
- [ ] Any dependent changes have been merged
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
