apache/seatunnel

[Feature][ClickhouseSinkWriter Unsupported data type: JSON

Open

#9,857 opened on Sep 12, 2025

View on GitHub
 (1 comment) (0 reactions) (1 assignee)Java (1,432 forks)batch import
help wanted

Repository metrics

Stars
 (6,897 stars)
PR merge metrics
 (Avg merge 13d 21h) (143 merged PRs in 30d)

Description

Search before asking

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

Description

目前我需要将http报文的json数据中的某一个节点上的数据以json的形式写入到clickhouse中，seatunnel运行时，上报异常，提示“Caused by: java.lang.IllegalArgumentException: Unsupported data type: JSON”，我希望ClickhouseSinkWriter 后续能支持写JSON数据类型。

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

Research direction
Investigate ClickHouse's JSON data type support and modify the ClickhouseSinkWriter to handle JSON column type mapping in SeaTunnel.
Tech stack
java
Domain
backenddata
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.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitJava
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60