apache/seatunnel

[Feature][Ossfile] 期望确实能提高单cvs文件的并行度

Open

#9768 opened on Aug 26, 2025

View on GitHub
 (2 comments) (0 reactions) (1 assignee)Java (6,897 stars) (1,432 forks)batch import
help wanted

Description

Search before asking

  • I had searched in the feature and found no similar feature requirement.

Description

作为源端时，目前csv文件记录数为两百万+的时候，跑的速度很慢，要十几分钟是最乐观的，能不能先把这个csv文件切成多个小csv文件，然后并行读写

Usage Scenario

No response

Related issues

No response

Are you willing to submit a PR?

  • Yes I am willing to submit a PR!

Code of Conduct

Contributor guide

Tech stack
java
Domain
databackend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
blocked
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
JavaSeaTunnel connector developmentCSV file handlingParallel processing concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
45
Research direction
Look into the SeaTunnel CSV source connector implementation (likely in seatunnel connectors v2/connector file/connector file base/). Investigate how files are currently read sequentially, and propose a splitting mechanism that divides large CSV files into smaller chunks for parallel processing. Consider using line number ranges or byte offsets. Check existing parallel read implementations for other formats in the same module for reference.