datafusion-contrib / datafusion-contrib/datafusion-distributed
Allow DesiredTaskCountHandler to return f64 as desired task counts
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- Dominant language
- Rust
- Stars
- 139
- Forks
- 67
- Avg merge
- 3d 1h
- Merged PRs (30d)
- 35
Description
Implementations might choose to declare fractions of tasks, so that when they get aggregated together (e.g., during ChildrenIsolatorUnionExecs), they do not request a higher task count than needed.
When resolving to the final task count, the ceil of the fractional value should be taken into account.
Contributor guide
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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
Start by locating DesiredTaskCountHandler and ChildrenIsolatorUnionExec, then trace how desired task counts are aggregated and resolved. Add coverage for fractional counts and verify that final resolution uses the ceiling; run the repository’s relevant test suite.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- distributed-systems
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 68/100