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LDBC SNB Interactive Neo4j/Cypher implementation

This directory contains the Neo4j/Cypher implementation of the Interactive workload of the LDBC SNB benchmark.

Setup

The recommended environment is that the benchmark scripts (Bash) and the LDBC driver (Java 8) run on the host machine, while the Neo4j database runs in a Docker container. Therefore, the requirements are as follows:

  • Bash
  • Java 8
  • Docker 19+
  • enough free space in the directory ${NEO4J_CONTAINER_ROOT} (its default value is specified in scripts/vars.sh)

Configuration

The default environment variables (e.g. Neo4j version, container name, etc.) are stored in scripts/vars.sh. Adjust these as you see fit.

Generating and loading the data set

Generating the data set

The data sets need to be generated and preprocessed before loading it to the database. To generate such data sets, use the Hadoop-based Datagen's CsvComposite serializer classes with the LongDateFormatter date formatter:

ldbc.snb.datagen.serializer.dateFormatter:ldbc.snb.datagen.util.formatter.LongDateFormatter

ldbc.snb.datagen.serializer.dynamicActivitySerializer:ldbc.snb.datagen.serializer.snb.csv.dynamicserializer.activity.CsvCompositeDynamicActivitySerializer
ldbc.snb.datagen.serializer.dynamicPersonSerializer:ldbc.snb.datagen.serializer.snb.csv.dynamicserializer.person.CsvCompositeDynamicPersonSerializer
ldbc.snb.datagen.serializer.staticSerializer:ldbc.snb.datagen.serializer.snb.csv.staticserializer.CsvCompositeStaticSerializer

An example configuration for scale factor 1 is given in the params-csv-composite-longdateformatter.ini file of the Datagen repository.

Preprocessing and loading

Set the following environment variables based on your data source and where you would like to store the converted CSVs:

export NEO4J_VANILLA_CSV_DIR=`pwd`/test-data/vanilla
export NEO4J_CONVERTED_CSV_DIR=`pwd`/test-data/converted

Loading the data set

To load the data sets, run the following script:

scripts/load-in-one-step.sh

This preprocesses the CSVs in ${NEO4J_VANILLA_CSV_DIR} and places the resulting CSVs in ${NEO4J_CONVERTED_CSV_DIR}, stops any running Neo4j database instances, loads the database and starts it.

Running the benchmark

To run the scripts of benchmark framework, edit the driver/{create-validation-parameters,validate,benchmark}.properties files, then run their script, one of:

driver/create-validation-parameters.sh
driver/validate.sh
driver/benchmark.sh

:Warning: The default workload contains updates which are persisted in the database. Therefore, the database needs to be reloaded or restored from backup before each run. Use the provided scripts/backup-database.sh and scripts/restore-database.sh scripts to achieve this. Alternatively, e.g. if you lack sudo rights, use Neo4j's built-in dump and load features through the scripts/backup-neo4j.sh and scripts/restore-neo4j.sh scripts.