jackwaudby / ldbc-snb-implementations

Implementations of the LDBC Social Network Benchmark

LDBC SNB Implementation for JanusGraph

This implementation assumes JanusGraph is backed by BerkeleyDB.

# set this to the janusgraph repo
export JANUSGRAPH_HOME=`pwd`
# set this to the DATAGEN repo
export LDBC_SNB_DATAGEN_HOME=`pwd`

Step-by-step Guide

Navigate to the scripts directory.

# delete berkeleydb database
./delete-db.sh
# load validation dataset into DATAGEN (this is where the loader looks for the data)
./load-validation.sh
# load schema, indexes, vertices and edges
./complete-loader.sh
# start janusgraph server
./start-gremlin-server.sh
# set driver configuration for validation in interactive-validate.properties
# run validation
./run-validation.sh

JanusGraph Console

Used for testing:

bin/gremlin.sh
graph = JanusGraphFactory.open('conf/janusgraph-berkeleyje-test.properties')
graph = JanusGraphFactory.open('conf/janusgraph-berkeleyje.properties')

g = graph.traversal()

Validation Set

Validation Set
Data Format:	CSVComposite
Operations:	1321
SF:	0.3
Vertex Count:	~210k
Edge Count:	~1.09m
Load Time:	~2:30mins
Index Time:	~2:45mins

Passing Validation:

• Short Reads 7/7
• Complex Reads 12/14
• Updates 8/8

Missing handler implementations for 0 operation type(s)

Operation	Incorrect Result
LdbcQuery1	1
LdbcQuery14	1

Issues:

• Validation's expected answer for LdbcQuery1 is including the start person which it should not (see Complex Read 1 in specification). This could imply a problem with the Cypher query used to generate the validation set.
• My LdbcQuery12 is not ordering by personId.
• Implementation of LdbcQuery14 does not handle the case when there are multiple shortest paths.
• Problem with LdbcShortQuery2PersonPosts and LdbcShortQuery7MessageReplies not returning results.