apache / apache/paimon

[Bug] compact performance

Open
#5,741 0 comments 0 reactions 0 assignees View on GitHub
bug
Dominant language
Java
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Avg merge
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Merged PRs (30d)
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Description

### Search before asking

- [x] I searched in the [issues](https://github.com/apache/paimon/issues) and found nothing similar.

### Paimon version

paimon 0.8

### Compute Engine

flink 1.18

### Minimal reproduce step

i have a table with 500+ columns, and 10T, but compact is always slow, how can i improve?

![Image](https://github.com/user-attachments/assets/df209696-52e8-431b-a538-356ba2e8b66a)

### What doesn't meet your expectations?

compact is slow

### Anything else?

_No response_

### Are you willing to submit a PR?

- [ ] I'm willing to submit a PR!

Contributor guide

No contributing guide indexed for this repository

Research direction

Start by reproducing the report with Paimon 0.8 and Flink 1.18 using a table with 500+ columns and 10T of data. No source files, tests, or entry points are named; done would require identifying the compaction bottleneck and documenting a verified way to improve its performance.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
data-engineering, performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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