Details
- Vendor
- Merck
- Type
- RDF
- Category
- Emerging
- Status
- Inactive — No development activity since mid-2022.
- License
- Apache-2.0
- Language
- Java
- Query Languages
- SPARQL
- Protocols
- HTTP/RESTSPARQL Protocol
Halyard
An RDF triple store built on Apache HBase and Hadoop using the Eclipse RDF4J framework. Distributes triple storage across an HBase cluster with support for named graphs and SPARQL 1.1 federation.
- Overall rank
- #88
- First released
- November 2016
- License
- Apache-2.0
- Built with
- Java
Details
Sources 4 references
Protocols SPARQL Protocol, HTTP/REST
Halyard is an RDF4J SAIL over HBase; queries reach it through RDF4J Server, which exposes a SPARQL endpoint plus REST repository-management calls.
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RDF4J Server is a service server that provides a SPARQL endpoint for each managed repository as well as the REST access to the repository management functions.
Halyard | Tools · reviewed 2026-08-02
License Apache-2.0
SPDX identifier as classified by GitHub from the repository licence file.
-
"spdx_id": "Apache-2.0"
GitHub licence API — Merck/Halyard · reviewed 2026-08-02
Released 2016-11
GitHub repo creation date; Halyard had no prior existence before this repo, so it reliably marks first public availability. Confirms current value.
-
"created_at":"2016-11-23T21:50:51Z"
Merck/Halyard · reviewed 2026-08-02
Language Java
Confirms current value.
-
Halyard implementation is based on Eclipse RDF4J framework and Apache HBase database, and it is completely written in Java.
Merck/Halyard · reviewed 2026-08-02