[Improvement][tez] Support combine operation in sort.
- Dominant language
- Java
- Stars
- 454
- Forks
- 172
- Avg merge
- 5d 17h
- Merged PRs (30d)
- 5
Description
### Code of Conduct
- [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)
### Search before asking
- [X] I have searched in the [issues](https://github.com/apache/incubator-uniffle/issues?q=is%3Aissue) and found no similar issues.
### What would you like to be improved?
As mentioned in #1238, it's useful to support combine operation.
This issue is for tez engine.
### How should we improve?
_No response_
### Are you willing to submit PR?
- [X] Yes I am willing to submit a PR!
Contributor guide
Research direction
Start by reading the context in issue #1238 and locating the Tez engine's sort path in the repository. Determine how a combine operation should integrate with sorting and define tests that demonstrate the expected behavior; done means Tez supports the requested combine operation.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- distributed-systems
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100