Create a huge neo4j dataset

RandomDB.java

import org.neo4j.kernel.impl.batchinsert.*;
import org.neo4j.graphdb.*;
import java.util.*;

class RandomDB {
    public static void main(final String args[]) {

        final Map<String, String> params = new HashMap<String,String>();
        params.put("neostore.nodestore.db.mapped_memory", "1024M");
        params.put("neostore.relationshipstore.db.mapped_memory", "2048M");
        params.put("neostore.propertystore.db.mapped_memory", "1024M");
        params.put("neostore.propertystore.db.strings.mapped_memory", "130M");
        params.put("neostore.propertystore.db.arrays.mapped_memory", "130M");

        final BatchInserter inserter = new BatchInserterImpl("/data/random.db", params);

        final int numNodes = 100000000;
        final int numRels = 200000000;

        for (int i = 0; i < numNodes; i++) {
            if ((i % 100000) == 0) {
                System.out.println("Creating node: " + i);
            }
            final Map<String,Object> props = new HashMap<String,Object>();
            props.put("name", java.util.UUID.randomUUID().toString());
            inserter.createNode(props);
        }

        final RelationshipType relType = DynamicRelationshipType.withName("connection");
        final Random random = new Random();

        for (int i = 0; i < numRels; i++) {
            if ((i % 1000) == 0) {
                System.out.println("Creating rel: " + i);
            }
            long node1 = random.nextInt(numNodes);
            long node2 = random.nextInt(numNodes);

            final Map<String,Object> props = new HashMap<String,Object>();
            props.put("name", java.util.UUID.randomUUID().toString());

            inserter.createRelationship(node1, node2, relType, props);
        }

        inserter.shutdown();
    }
}