Some pipes occasionally get ahead when broadcasting through multiple pipes.
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bug
- Dominant language
- Scala
- Stars
- 2.5k
- Forks
- 636
- Avg merge
- 2d 4h
- Merged PRs (30d)
- 7
Description
Some pipes occasionally get ahead by 1 element when broadcasting an un-chunked stream through multiple pipes using broadcastThrough.
A reproduction of the issue, using Scala 2.13.6 and fs2 3.1.1, can be found in this project or on scastie.
Contributor guide
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 with the reproduction in src/main/scala/snippets/BroadcastingRace.scala from the linked project, using the Scala 2.13.6 and fs2 3.1.1 setup described. Trace the un-chunked stream through broadcastThrough and reproduce the race; done means multiple pipes no longer get ahead by one element.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- scala
- Domain
- stream-processing
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100