neo4j Exception in java

[pyg...@gmail.com]

Hi,

when I import a big data set in Neo4j database,the graph has 262111  vertices and  1234877 edges,eclipse has exception:Esception in thread "GC-Monitor" java.lang.OutOfMemoryError:GC overhead limit exceeded ,my code is as folows:

                System.out.println("从文件中把图数据到内存（用数组存放）...");

{

String line=null;

String[] arrs = null;

File file=new File(vertexPath);

BufferedReader bf = new BufferedReader(new FileReader(file));

int i=0;

while((line=bf.readLine())!=null){

vid[i++]=Integer.parseInt(line);

}

bf.close();

file=new File(path);

bf = new BufferedReader(new FileReader(file));

int count=0;

while((line=bf.readLine())!=null){

arrs=splitt(line);

int startId=Integer.parseInt(arrs[0]);

int endId=Integer.parseInt(arrs[1]);

edge[count][0]=startId;

edge[count][1]=endId;

++count ;

}

System.out.println("the num of edge is:"+count);

bf.close();

}

System.out.println("把图数据装载在neo4j数据库中...");

{

long startTime = 0, endTime = 0;

double buildTime = 0d;

startTime = System.nanoTime();

startDb();

Transaction tx = graphDb.beginTx();

   try {

    for(int i = 0; i < nv; i++) {

    node[i] = graphDb.createNode();

    node[i].setProperty("id", vid[i]);

    }

    int count=0;

    for(int i=0;i<ne;++i){

    int startId=edge[i][0];

    int endId=edge[i][1];

    int startIndex=locateVertexIndex(startId);

    int endIndex=locateVertexIndex(endId);

    Relationship rel = node[startIndex].createRelationshipTo(node[endIndex], RelTypes.EDGE);

    rel.setProperty("weight",1);

    ++count;

    if(count%10000==0){

    tx.success();

    System.out.println("commit line:"+count);

    }

   

    }

    if(count%10000!=0){

    tx.success();

    System.out.println("commit line:"+count);

    }

   } catch (Exception e) {

    tx.failure();

   }

   finally {

      tx.finish();

   }

   endTime = System.nanoTime();

buildTime = (double) (endTime - startTime) / (1e9);

System.out.println("the time of inserting nodes in Neo4j is锛氾細" + buildTime);

}

I want to know the reason?