TimelyDataflow / TimelyDataflow/differential-dataflow

`distinguish_since` is a terror

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Dominant language
Rust
Stars
3k
Forks
211
Avg merge
10h 42m
Merged PRs (30d)
34

Description

At the moment users must manually call distinguish_since to unblock physical merging of batches. This seems like a mis-feature, and should probably be handled automatically, perhaps with capability-like "bookmarks" that allow a user to subset batches up to that point. This would simplify several APIs and reduce a fairly consistent source of confusion.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue names the distinguish_since API but no files, tests, or entry points. Start by reading the existing distinguish_since implementation and its callers, then determine the intended automatic batching and bookmark semantics; done would require an agreed design and corresponding API simplification.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
distributed-systems
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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