LDBC SNB implementations

Implementations for the Workload components of the LDBC Social Network Benchmark (specification).

⚠️ 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.

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 (optional)
  • ldbc_snb_implementations

Implementations

Each project has its own README:

• Cypher (Neo4j driver) implementation
• PostgreSQL implementation
• SPARQL 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
SPARQL	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
SPARQL	01	02	03	04	05	06	07

Updates

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
SPARQL	01/p 01/c 01/e 01/l 01/t 01/u	02	03	04/f 04/t	05	06/p 06/t 06/i 06/c	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
SPARQL	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
SPARQL	11	12	13	14	15	16	17	18	19	20

query	21	22	23	24	25
Neo4j (Cypher)	21	22	23	24	25
PostgreSQL	21	22	23	24	25
SPARQL	21	22	23	24	25

User's guide

1. Build the driver binaries from source. This step is optional as the latest stable version of the driver is released on Bintray.

   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 generate the JAR files for the implementations:

   mvn clean package -DskipTests

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:

   # BI workload
   ./bi-create-validation-parameters.sh
   ./bi-validate.sh
   ./bi-benchmark.sh
   # Interactive workload
   ./interactive-create-validation-parameters.sh
   ./interactive-validate.sh
   ./interactive-benchmark.sh

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

Generating small test data tests

To generate small data sets, use scale factor 1 (SF1) with the persons and years set according to this template:

ldbc.snb.datagen.generator.scaleFactor:snb.interactive.1

ldbc.snb.datagen.generator.numPersons:50
ldbc.snb.datagen.generator.numYears:1
ldbc.snb.datagen.generator.startYear:2010

ldbc.snb.datagen.generator.numThreads:1
ldbc.snb.datagen.serializer.outputDir:./test_data/

ldbc.snb.datagen.serializer.personSerializer:ldbc.snb.datagen.serializer.snb.interactive.<SerializerType>PersonSerializer
ldbc.snb.datagen.serializer.invariantSerializer:ldbc.snb.datagen.serializer.snb.interactive.<SerializerType>InvariantSerializer
ldbc.snb.datagen.serializer.personActivitySerializer:ldbc.snb.datagen.serializer.snb.interactive.<SerializerType>PersonActivitySerializer