apache / apache/uniffle

[FEATURE] A more thorough data cleaning mechanism

Open
#1,821 1 comment 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.

### Describe the feature

We found that after the server cluster is restarted, the app directories on HDFS may not be cleaned up, which can lead to long-term occupation of disk space. We need a more thorough data cleaning mechanism to make sure data is always cleaned up, without leaks.

### Motivation

_No response_

### Describe the solution

_No response_

### Additional context

_No response_

### Are you willing to submit PR?

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

Contributor guide

Open the contributing guide

Research direction

Start by tracing server-cluster restart handling and the lifecycle of app directories on HDFS. Define and verify behavior that removes leftover app directories after restarts without data leaks; the issue names no files or tests, so the relevant entry points must first be located.

Written by the indexing model from the issue text.

Assessment

Tech stack
hadoop, java
Domain
data-engineering, distributed-systems
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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