apache/fluss

Support general DELETE statement on primary key table

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#1,594 opened on Aug 26, 2025

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component=kvgood first issue

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Description

Search before asking

  • I searched in the issues and found nothing similar.

Motivation

See the discussion https://github.com/apache/fluss/pull/1201#discussion_r2168287356

Currently, we only support DELETE statement on primary key table with equal condition on primary key. This is very limited and we should support general DELETE statement like how we implement UPDATE statement via org.apache.fluss.flink.sink.FlinkTableSink#applyRowLevelUpdate.

Solution

No response

Anything else?

No response

Willingness to contribute

  • I'm willing to submit a PR!

Contributor guide

Research direction
Implement a general DELETE statement for primary key tables by extending the FlinkTableSink's applyRowLevelUpdate logic to handle DELETE operations, following the approach in the referenced PR discussion.
Tech stack
java
Domain
backenddatabase
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.
Mostly clear
Prerequisites
JavaSQLFlink
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25