apache
[Feature][Task - kill task] Support user to config kill signal type of killing process/task
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Description
I noticed that if user try to kill the task/process, for example, a Java task, dophin scheduler will send "kill -9" which is "SIGKILL" signal to java worker process.
Would you please make the kill signal be configable? Becasue in some situation, we want worker process to send "I am killed" message to specific observer application or do something else to clean resource when user try to kill task/process via dophin scheduler. And if the worker process is killed by ""SIGKILL" signal, there is no chance for "JVM runtime hook" to do something when the process needed to exit.
Thererfore, would you please make the kill signal be configable? Thanks for your help.
Use case
User can be config the kill signal type of specific work process/task.
Related issues
No response
Are you willing to submit a PR?
- [ ] Yes I am willing to submit a PR!
Code of Conduct
- [x] I agree to follow this project's Code of Conduct
Hi @SbloodyS i am willing to take this feature
I've assigned to you. Looking forward to your contribution.
Hi @ws752499660
Thanks for raising this!
Just to clarify — starting from DolphinScheduler v3.3.0-alpha, the task kill logic has already been improved as part of PR #17005. It now follows a graceful shutdown sequence:
SIGINT → SIGTERM → SIGKILL
So: • If a task supports graceful termination (e.g., Java with shutdown hooks), it will now handle that properly via SIGINT. • SIGKILL is only used as a last resort if the earlier signals fail.
At the moment, configuring or customizing the kill signal (globally or per-task) is not available — it follows the fixed order above.
@SbloodyS would it still make sense to work on this as a configurable feature, or should we consider this already resolved since the graceful signal flow is now in place?