LDBC SNB implementations

Implementations for the Workload components of the LDBC Social Network Benchmark.

📜 If you wish to cite the LDBC SNB, please refer to the documentation repository.

⚠️ Implementations in this repository are preliminary, i.e. they are unaudited and - in rare cases - do not pass validation. For details, feel free to contact us through an issue or email.

Compatibility

The LDBC Social Network Benchmark suite is continuously maintained with improvements in the specification, the data generator, the driver, and the reference implementation. To ensure that you are using compatible LDBC repositories, use the following table:

project	v0.3.x	v0.4.x
Documentation	v0.3.3	dev
Datagen	v0.3.3	dev
Driver	v0.3.3	dev
Implementations	stable	dev

The stable branches of the repositories correspond to the v0.3.x, and the dev branches correspond to the v0.4.x releases.

Directory layout

Multiple configuration files and scripts use relative paths to address the data generator's directory. Hence, it is recommended to clone the LDBC Data Generator and the LDBC implementations repositories next to each other and keep their original directory names. For example:

• ldbc
  • ldbc_snb_datagen
  • ldbc_snb_driver
  • ldbc_snb_implementations

Implementations

Each project has its own README:

• Neo4j implementation
• PostgreSQL implementation

The Sparksee implementation is maintained in a separate repository.

Queries

The queries in this repository are work-in-progress. If possible, please cross-validate your queries against multiple implementations.

Interactive

Complex reads

query	01	02	03	04	05	06	07	08	09	10	11	12	13	14
Neo4j (Cypher)	01	02	03	04	05	06	07	08	09	10	11	12	13	14
PostgreSQL	01	02	03	04	05	06	07	08	09	10	11	12	13	14

Short reads

query	01	02	03	04	05	06	07
Neo4j (Cypher)	01	02	03	04	05	06	07
PostgreSQL	01	02	03	04	05	06	07

Inserts

query	01	02	03	04	05	06	07	08
Neo4j (Cypher)	01	02	03	04	05	06	07	08
PostgreSQL	01/p 01/c 01/e 01/l 01/t 01/u	02	03	04/f 04/t	05	06/p 06/t	07/c 07/t	08

BI

query	01	02	03	04	05	06	07	08	09	10
Neo4j (Cypher)	01	02	03	04	05	06	07	08	09	10
PostgreSQL	01	02	03	04	05	06	07	08	09	10

query	11	12	13	14	15	16	17	18	19	20
Neo4j (Cypher)	11	12	13	14	15	16	17	18	19	20
PostgreSQL	11	12	13	14	15	16	17	18	19	20

User's guide

1. If you are on the dev branch or any other unstable branch, first build and install the driver from source.

   1. Grab the driver source code from: https://github.com/ldbc/ldbc_snb_driver.

   2. Install the driver artifact to the local Maven repository:

      mvn clean install -DskipTests

2. Navigate to the root of this repository and build it to generate the JAR files for the implementations:

   ./build.sh

3. For each implementation, it is possible to (1) create validation parameters, (2) validate against an existing validation parameters, and (3) run the benchmark. Set the parameters according to your system configuration in the appropriate .properties file and run the driver with one of the following scripts in the driver directory:

   # BI workload
   driver/bi-create-validation-parameters.sh
   driver/bi-validate.sh
   driver/bi-benchmark.sh
   # Interactive workload - note that if the workload contains updates, the database needs to be re-loaded between steps
   driver/interactive-create-validation-parameters.sh
   driver/interactive-validate.sh
   driver/interactive-benchmark.sh

For more details, on validating and benchmarking, visit the driver wiki.

Testing

To generate small data sets for smoke tests, use scale factor 0.003 (generator.scaleFactor:0.003).