apache/jena

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Apache Jena, A free and open source Java framework for building Semantic Web and Linked Data applications.

Stars: 1.4k
Forks: 712
Open beginner issues: 0
Indexed issues: 84
Avg merge: 15h 41m
Merged PRs (30d): 53

Dominant language: Java
License: Apache-2.0
Last GitHub push: Sep 14, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted

Open All

84 open issues indexed

Poor performance when parsing huge literal in query (e.g. 100MB) Open

apache/jena#1324 · 32 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
fuseki query UI multiple tabs Open

enhancement Fuseki UI

apache/jena#1334 · 3 comments · 3 reactions · 1 assignee · Indexed Sep 14, 2026
PrefixMapStd is very slow for lookups that 'miss' Open

bug

apache/jena#1474 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Assembler: Mode.DEFAULT / Mode.REUSE are not considered and result in Mode.CREATE Open

bug

apache/jena#1476 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Improve fuseki backup to consider failures (fuseki crash) and clean up incomplete backups Open

enhancement

apache/jena#1500 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
ShEx validation tests use exhaustive exclusion lists rather than manifest traits Open

improvement

apache/jena#1593 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Improvements to path evaluation Open

enhancement

apache/jena#1629 · 2 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
optional streaming construct? Open

enhancement

apache/jena#1633 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add LIKE, which uses glob matching instead of regex. Open

enhancement

apache/jena#1666 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Make org.apache.jena.atlas.lib.Closeable extend java.lang.AutoCloseable Open

enhancement

apache/jena#1704 · 6 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
[UI] Support SPARQL-star Open

enhancement

apache/jena#1727 · 0 comments · 1 reaction · 1 assignee · Indexed Sep 14, 2026
SPARQL-star queries perform poorly Open

performance

apache/jena#1744 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Authentication] Ability to configure fuseki authentication through the config file Open

enhancement

apache/jena#1767 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Fuseki UI: /edit view should not count number of triples for each graph Open

enhancement Fuseki UI

apache/jena#1778 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
shacl validate exit code Open

enhancement SHACL

apache/jena#1790 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Fuseki UI: custom SPARQL query prefixes or examples Open

enhancement

apache/jena#1793 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Serving the Jena Fuseki UI from the Embedded Server? Open

question

apache/jena#1795 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Make default Fuseki access settings more secure Open

enhancement

apache/jena#1796 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
REGEX Expression Evaluation errors can flood the logs Open

enhancement improvement

apache/jena#1817 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
arq: multiple input files without repeating --data Open

enhancement

apache/jena#1862 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[FEATURE REQUEST] Add GeoSPARQL support on arq and tdbquery Open

enhancement

apache/jena#1953 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Lucene index is updated incorrectly during some dataset changes Open

bug Text Index

apache/jena#1985 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
rdfdiff Open

bug

apache/jena#1987 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Move Dataset management API to fuseki-main? Open

enhancement

apache/jena#2008 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Passing multiple --data arguments to `shacl v` Open

enhancement SHACL

apache/jena#2009 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
When serializing Dataset to JSONLD the @context is populated only from default graph Open

enhancement help wanted

apache/jena#2031 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Check all uses of JenaParameters and decide on system behaviour. Open

Jena5

apache/jena#2049 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[jena5] UI e2e tests have a 404 to `/` which appears to stop tests Open

Jena5 task

apache/jena#2057 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[ui] Test MSW to replace json-server in mock tests Open

Fuseki UI task

apache/jena#2063 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[ui] Verify if we still needs the dependency requirement overrides Open

dependencies Fuseki UI javascript task

apache/jena#2082 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Implement RDF Dataset Canonicalization and provide EARL report Open

help wanted

apache/jena#2105 · 9 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
/$/compact/ with deleteOld=true does not remove the old folder (on Windows) Open

bug

apache/jena#2127 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
`rdfdiff` with quad support Open

enhancement help wanted

apache/jena#2131 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
QueryBuilder should generate query syntax trees that correspond to parser output. Open

enhancement Query Builder

apache/jena#2156 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Support passing a custom `TransactionalSystem` in `TDB2StorageBuilder` Open

enhancement

apache/jena#2200 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
rdfdiff finds too many differences Open

enhancement

apache/jena#2285 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Fuseki to send `ETag` response headers Open

enhancement Fuseki

apache/jena#2305 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Convert Fuseki tests to use server-per-test, not server-per-testsuite. Open

build Fuseki task

apache/jena#2340 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Protect the `deleteOld` step of TDB2 compaction Open

TDB

apache/jena#2360 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
RDF Patch Binary Reader silently accepts some invalid patch files Open

bug

apache/jena#2402 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Fix broken Fuseki when using a context path in the URL Open

bug Fuseki

apache/jena#2419 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Fuseki] Reloadable configuration files Open

enhancement Fuseki

apache/jena#2462 · 5 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
More granular control over Blank node serialization Open

enhancement

apache/jena#2549 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
org.apache.jena.fuseki.servlets.ActionErrorException: Cannot read field "succ" because "n" is null Open

bug Reasoners

apache/jena#2616 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Logging SPARQL Updates Open

enhancement

apache/jena#2690 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
API call to get a snapshot of running queries Open

enhancement

apache/jena#2701 · 2 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Add support for configurable indentation length in turtle serialization Open

enhancement

apache/jena#2709 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Fuseki UI: support inference options in dataset creation Open

enhancement

apache/jena#2764 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Interaction of GRAPH graph patterns and subqueries Open

bug

apache/jena#2793 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Support RDF 1.2 Open

enhancement RDF 1.2

apache/jena#2805 · 2 comments · 3 reactions · 1 assignee · Indexed Sep 14, 2026

apache/jena

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