make MPP Cancel take effects for mpp task that is still in compile stage
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- Dominant language
- C++
- Stars
- 1k
- Forks
- 423
- Avg merge
- 1d 15h
- Merged PRs (30d)
- 24
Description
Currently, MPP Cancel only can cancel mpp tasks that already in running state, for those not in runnging state(for example, still in compiling stage), they are not cancelled until begin running. Since compiling may take a long time during to wait_index, it's better to make MPP Cancel take effects for mpp task that is still in compile stage.
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Trace MPP Cancel handling and the compile-stage path around wait_index, focusing on why cancellation is honored only after a task enters running state. Done means an MPP task still compiling can be cancelled promptly instead of waiting until it begins running; verify the behavior with the relevant existing test coverage.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- databases, distributed-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100