apache / apache/uniffle

[Improvement] Huge partition optimization on local disk

Open
#695 5 comments 0 reactions 0 assignees View on GitHub
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?

In #378, we have discussed the huge partition problems. And the final solution is to make it flush to HDFS directly and limit memory usage.

But for some users only using `MEMORY_LOCALFILE` storage type, it's useless. So this issue is to track the huge partition optimization on local disk.

### How should we improve?

## SubTasks
1. Support flushing single partition to multiple disks
2. Support pluggable local disk selection strategy
3. Support dynamic assignment of shuffle server, especially when the disk of server is full
4. ...

### Are you willing to submit PR?

- [ ] Yes I am willing to submit a PR!

Contributor guide

Open the contributing guide

Research direction

Start by reading the huge partition discussion in issue #378 and tracing how the MEMORY_LOCALFILE storage type handles local-disk flushing. Break down the listed subtasks around multi-disk partition flushing, pluggable disk selection, and shuffle-server assignment. Done means the agreed local-disk optimization scope is implemented and each subtask is validated.

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
Mostly clear
Newbie friendliness
25/100

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