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TimelyDataflow

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timely-dataflow
A modular implementation of timely dataflow in Rust

Rust · 3647 stars
differential-dataflow
An implementation of differential dataflow using timely dataflow on Rust.

Rust · 3011 stars

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Workflow "Test build against Timely master" failed Open

build-failure

Difficulty 4/5 3-5 days Newbie friendliness 35/100

TimelyDataflow/differential-dataflow#839 · Opened Aug 19, 2026
reduce driver: late empty batches can transiently regress upper_limit (hardening follow-up from #801) Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

TimelyDataflow/differential-dataflow#806 · Opened Jul 17, 2026
Expose a named variant of `join_core` (mirroring `arrange_named`) for operator-level profiling Open

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

TimelyDataflow/differential-dataflow#770 · 2 comments · Opened Jun 24, 2026
Provenance/Explanation Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/differential-dataflow#742 · 15 comments · 2 reactions · Opened May 17, 2026
Prefetch hints for arrangement reads (joins, reduces) Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

TimelyDataflow/differential-dataflow#716 · 1 comment · 1 reaction · Opened Apr 9, 2026
Outdated text in "Creating Operators" subsection of book Open

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

TimelyDataflow/timely-dataflow#739 · 1 comment · Opened Feb 7, 2026
Expose pointer to memory in BatchFrontier/BatchReader/BatchContainer/Cursor? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/differential-dataflow#658 · 2 comments · Opened Jan 20, 2026
Workflow "Test build against Timely master" failed Open

build-failure

Difficulty 3/5 1-2 days Newbie friendliness 35/100

TimelyDataflow/differential-dataflow#646 · Opened Sep 18, 2025
Add example for how to implement `Distributor` Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

TimelyDataflow/timely-dataflow#708 · Opened Sep 16, 2025
Clarify relationship of `push_into` and `Accountable` Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/timely-dataflow#706 · Opened Aug 29, 2025
All algorithms should be usable with generic containers Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/differential-dataflow#622 · 1 comment · Opened Jul 11, 2025
Allow containers on half-join's stream input Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/differential-dataflow#621 · Opened Jul 11, 2025
Reduce operator (and others) may be quadratic with deep history Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/differential-dataflow#618 · Opened Jul 7, 2025
Trace import in an iterative context appears to create downgrade loop Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

TimelyDataflow/differential-dataflow#598 · 3 comments · Opened Apr 21, 2025
Add a CHANGELOG.md to dogsdogsdogs Open

TimelyDataflow/differential-dataflow#576 · 1 assignee · Opened Feb 19, 2025
Improve clarity around `Cursor` method requirements Open

TimelyDataflow/differential-dataflow#513 · 1 assignee · Opened Jun 11, 2024
Suggestion: WebAssembly support Open

Difficulty 5/5 Over a week Newbie friendliness 28/100

TimelyDataflow/differential-dataflow#479 · 22 comments · 1 reaction · Opened Apr 29, 2024
Arrangement batch formation costs in proportion to outstanding updates Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

TimelyDataflow/differential-dataflow#460 · 3 comments · Opened Feb 19, 2024
Revisit the stashing logic in MergeBatcherColumnation Open

TimelyDataflow/differential-dataflow#426 · 1 assignee · Opened Nov 23, 2023
maybe the doc should add some instructions at geting started section Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

TimelyDataflow/differential-dataflow#406 · 1 reaction · Opened Aug 28, 2023
Dynamically adding/removing workers Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/timely-dataflow#529 · 2 comments · Opened Aug 17, 2023
Question: how to change data timestamp for late arriving data Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

TimelyDataflow/differential-dataflow#400 · 4 comments · Opened Jun 30, 2023
Holding on to a trace with physical/logical compaction to the empty frontier stalls compaction Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

TimelyDataflow/differential-dataflow#398 · Opened Jun 26, 2023
Remove `Core` variants of various types Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/timely-dataflow#510 · Opened Mar 6, 2023
Operator to flatten `Collection<Collection<G, D, R>>` into `Collection<G, D, R>` Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/differential-dataflow#372 · Opened Nov 12, 2022
Primes example... slower with more workers? Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

TimelyDataflow/timely-dataflow#479 · 1 comment · Opened Aug 12, 2022
Activator: Bound memory utilization by compaction and de-duplication Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

TimelyDataflow/timely-dataflow#470 · Opened Jun 22, 2022
what different with flink Retraction Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

TimelyDataflow/differential-dataflow#357 · 3 reactions · Opened Mar 10, 2022
Consolidate Timestamps and Time Windowed Dataflows Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/differential-dataflow#351 · Opened Jan 10, 2022
Consider using `RefOrMut` in `half_join` Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

TimelyDataflow/differential-dataflow#343 · Opened Oct 6, 2021
Question about some codes in `arrangement.rs` Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

TimelyDataflow/differential-dataflow#333 · Opened Aug 2, 2021
Trace imports are invisible Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/differential-dataflow#330 · 4 comments · Opened Jul 8, 2021
Lazy memory allocation in channel pushers. Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

TimelyDataflow/timely-dataflow#394 · 6 comments · Opened Jun 11, 2021
Allow making conditional regions Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

TimelyDataflow/timely-dataflow#392 · 1 comment · 1 reaction · Opened Jun 5, 2021
Present lower-level operator interfaces Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/differential-dataflow#326 · Opened May 19, 2021
Consider a robust TCP / etc communication fabric Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/timely-dataflow#386 · Opened Apr 28, 2021
Regions have non-trivial overhead Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/timely-dataflow#382 · Opened Apr 13, 2021
Conditionally return object if related to subject via pattern Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

TimelyDataflow/differential-dataflow#315 · Opened Mar 10, 2021
Provide re-usable shared `MutableAntichain` Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/timely-dataflow#368 · Opened Feb 26, 2021
Consider marking streams as `MustUse`. Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

TimelyDataflow/timely-dataflow#358 · 1 comment · 2 reactions · Opened Feb 8, 2021
Allow TimelyProgressEvent to be used with serde Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

TimelyDataflow/timely-dataflow#356 · Opened Jan 30, 2021
Audit operator code for "overload protection" Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

TimelyDataflow/differential-dataflow#302 · Opened Jan 29, 2021
Add a FilterMap operator Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

TimelyDataflow/timely-dataflow#355 · 3 comments · Opened Jan 25, 2021
Consider `Tombstone` trait for `Diff` Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

TimelyDataflow/differential-dataflow#298 · 3 reactions · Opened Jan 25, 2021
Changing default allocation size in `channel/mod.rs` Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

TimelyDataflow/timely-dataflow#346 · 6 comments · Opened Dec 11, 2020
Your documentation text is superb Open

Difficulty 5/5 Over a week Newbie friendliness 5/100

TimelyDataflow/timely-dataflow#345 · 1 comment · 8 reactions · Opened Dec 2, 2020
Support serializing internal state Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/timely-dataflow#344 · 5 comments · 1 reaction · Opened Nov 28, 2020
Tracking progress towards completion. Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

TimelyDataflow/timely-dataflow#340 · 1 comment · Opened Nov 8, 2020
Clarify how Variables work Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

TimelyDataflow/differential-dataflow#286 · 1 comment · Opened Nov 6, 2020
Aggregating collection into a single value Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

TimelyDataflow/differential-dataflow#276 · Opened Aug 8, 2020

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