replikativ/datahike

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Versioned, fast, distributed Datalog engine for everyone.

Stars: 1.9k
Forks: 117
Open beginner issues: 0
Indexed issues: 75
Avg merge: 10h 7m
Merged PRs (30d): 111

Dominant language: Clojure
License: EPL-1.0
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted

Beginner friendly Everything

Open All

75 open issues indexed

[Bug]: Query planner: _ argument to a rule in an or → "Cannot resolve any more clauses" Open

bug triage

Difficulty 3/5 1-2 days Newbie friendliness 78/100

replikativ/datahike#1024 · Opened Aug 28, 2026
Two attribute-refs rename loose ends: the old ident stays a live alias, and two validators disagree by spelling Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

replikativ/datahike#972 · Opened Aug 20, 2026
An Error (not Exception) during import is swallowed, producing a successful-looking report Open

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

replikativ/datahike#971 · Opened Aug 20, 2026
Deterministic query fuel: budget a query the way `:cancel` stops one Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

replikativ/datahike#964 · Opened Aug 17, 2026
Query plan cache is keyed without data, so plans built from data-dependent statistics go stale (0.8.1777) Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

replikativ/datahike#963 · Opened Aug 17, 2026
GC under Lambda freeze: a suspended collector can sweep with a stale mark Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

replikativ/datahike#960 · Opened Aug 17, 2026
`(d/sync conn T)` support Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

replikativ/datahike#958 · Opened Aug 16, 2026
Generalize IColumnarAggregate routing beyond stratum, and support external-engine/document-path columns Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

replikativ/datahike#952 · Opened Aug 13, 2026
Online GC is unsafe with diff-buf: the freed-address stream is only sound for a linear history Open

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

replikativ/datahike#951 · Opened Aug 9, 2026
sec/vt-aware? answers false for the whole duration of any write Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

replikativ/datahike#948 · Opened Aug 4, 2026
Stratum SCD2: a new version row is built only from that transaction's assertions, not merged from the open row Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

replikativ/datahike#947 · Opened Aug 4, 2026
:hash is inconsistent from birth on :attribute-refs? databases Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

replikativ/datahike#943 · 1 comment · Opened Aug 3, 2026
Value-free scalar :in bindings are dropped inside not-join / or bodies (silent wrong results on the planner) Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

replikativ/datahike#938 · Opened Aug 2, 2026
Writer fencing: make a stale writer's commit FAIL, not clobber (conditional head write) Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

replikativ/datahike#878 · Opened Jul 13, 2026
Expose Datahike Server Namespace Open

enhancement

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

replikativ/datahike#736 · 2 comments · 1 reaction · Opened Jun 16, 2025
[Bug]: Infinite hang when connecting to sqlite again Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 52/100

replikativ/datahike#731 · 5 comments · Opened Apr 22, 2025
Rebuild datahike index Open

enhancement

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

replikativ/datahike#728 · 1 comment · Opened Mar 31, 2025
Use transaction log Open

enhancement

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

replikativ/datahike#718 · 1 reaction · Opened Nov 3, 2024
[Bug]: Transaction report returns datom attributes as longs with attribute refs Open

bug triage

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

replikativ/datahike#717 · Opened Oct 10, 2024
[Bug]: datahike.migrate has a problem with schema/double (which cbor converts to float) Open

bug triage

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

replikativ/datahike#633 · 2 comments · Opened Jul 26, 2023
Extend integration-test namespace Open

enhancement

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

replikativ/datahike#622 · Opened Mar 24, 2023
Clojure backward compatibility Open

enhancement

replikativ/datahike#619 · 1 reaction · 1 assignee · Opened Mar 22, 2023
[Bug]: delete-database throws NPE for :file backend Open

bug triage

Difficulty 3/5 1-2 days Newbie friendliness 42/100

replikativ/datahike#616 · 8 comments · Opened Mar 18, 2023
Add generative tests at least for API namespace Open

enhancement

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

replikativ/datahike#605 · 1 comment · Opened Feb 20, 2023
Run benchmark tests in ci pipeline Open

enhancement

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

replikativ/datahike#604 · 2 comments · 1 reaction · Opened Feb 20, 2023
Add examples for q with varargs Open

enhancement

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

replikativ/datahike#600 · Opened Jan 31, 2023
[Bug]: Pull with attr-name not in schema differs from Datomic Open

bug datomic compat triage

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

replikativ/datahike#579 · Opened Nov 10, 2022
[Bug]: Removed attributes still present in the index Open

bug triage

replikativ/datahike#565 · 1 assignee · Opened Oct 21, 2022
[Bug]: "0.5.1506" cannot import dump from "0.4.1480" Open

bug triage

replikativ/datahike#552 · 1 comment · 1 assignee · Opened Jul 14, 2022
[Bug]: java.lang.IllegalArgumentException Open

bug triage

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

replikativ/datahike#551 · 3 comments · Opened Jul 14, 2022
Can't query by attribute :db/id instead of :db/ident Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 38/100

replikativ/datahike#549 · Opened Jun 29, 2022
clean up project files Open

replikativ/datahike#548 · 3 comments · 1 assignee · Opened Jun 24, 2022
[Bug]: Java unittests fail sometimes on circleci Open

bug CI triage

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

replikativ/datahike#547 · Opened Jun 24, 2022
Improve examples Open

enhancement

replikativ/datahike#545 · 5 comments · 1 assignee · Opened Jun 16, 2022
[Bug]: Hitchhiker-tree index repeatedly retracts datom with re-upserted value instead of latest value Open

blocked bug triage

replikativ/datahike#541 · 1 comment · 1 assignee · Opened May 24, 2022
[Bug]: Datahike implements `clojure.lang.Counted` in linear time Open

bug triage

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

replikativ/datahike#534 · 3 comments · Opened May 7, 2022
[Bug]: Datom input order is generally not registered within a transaction causing complicated upserts Open

enhancement refactoring

replikativ/datahike#533 · 1 assignee · Opened May 6, 2022
[Bug]: schema updates and removals are not consistent Open

bug triage

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

replikativ/datahike#532 · 2 comments · Opened May 6, 2022
[Bug]: restore operation fails (with no transaction history) Open

bug triage

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

replikativ/datahike#531 · 5 comments · Opened May 5, 2022
Stress testing Open

enhancement testing

Difficulty 4/5 3-5 days Newbie friendliness 38/100

replikativ/datahike#528 · Opened May 3, 2022
Datom comparator refactoring Open

enhancement refactoring

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

replikativ/datahike#524 · Opened Apr 27, 2022
Better test coverage for different database configurations Open

enhancement testing

replikativ/datahike#520 · 2 comments · 1 assignee · Opened Apr 26, 2022
[Bug]: Behaviour of tuple with :db.unique/identity differs from Datomic (can't update an entity by transact) Open

bug datomic compat triage

Difficulty 4/5 3-5 days Newbie friendliness 38/100

replikativ/datahike#510 · Opened Apr 8, 2022
[Bug]: Future migrations for attribute-references Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 38/100

replikativ/datahike#508 · Opened Apr 6, 2022
[Bug]: Identical behavior for hitchhiker-tree and persistent-set index? Open

bug triage

replikativ/datahike#507 · 1 assignee · Opened Apr 6, 2022
Support for aliases Open

datomic compat enhancement

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

replikativ/datahike#497 · 4 comments · Opened Mar 13, 2022
[Bug]: Symbols not compared correctly in queries Open

bug triage

replikativ/datahike#482 · 1 assignee · Opened Feb 16, 2022
[Bug]: init max-ent-id from index if needed Open

bug

replikativ/datahike#465 · 1 reaction · 1 assignee · Opened Jan 14, 2022
[Bug]: incomplete config documentation Open

bug

replikativ/datahike#449 · 1 reaction · 1 assignee · Opened Dec 7, 2021
[Bug]: not-join variables not respected Open

bug

replikativ/datahike#448 · 2 comments · 1 assignee · Opened Dec 6, 2021

replikativ/datahike

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