Hi,
we use the following code:
try (Transaction tx = db.beginTx()) {
// read or write data
tx.success();
}
We have the OutOfMemory error, working with 1 million nodes and 3 million
relationships.
Most of our functions have a transaction, for read or write in the graph.
For example:
(read)
public Node getNode()
{
Node node = nodeRef.get();
try (Transaction tx = graphDB.getGraphDB().beginTx())
{
if (node == null)
{
node = (Node) graphDB.getGraphDB().getNodeById(id);
setNode(node);
}
tx.success();
}
return node;
}
(write)
public IEdge addEdge(INode x, INode y, IEdgeType similarityEdgeType,
String propertyName, Object value)
{
Node source = ((Neo4J2Node) x).getNode();
Node dest = ((Neo4J2Node) y).getNode();
Relationship rel = null;
try (Transaction tx = graphDB.beginTx())
{
rel = source.createRelationshipTo(dest,
getRelationshipTypeByEdgeType(similarityEdgeType));
rel.setProperty(propertyName, value);
tx.success();
}
return new Neo4J2Edge(rel, this);
}
Thanks.
Mattia
Il giorno sabato 21 giugno 2014 17:05:55 UTC+2, Michael Hunger ha scritto:
>
> What does your code look like?
>
> Do you close the transaction again?
>
>
> try (Transaction tx = db.beginTx()) {
> // read or write data
> tx.success();
> }
>
> Am 20.06.2014 um 10:19 schrieb Mattia Pellè <[email protected]
> <javascript:>>:
>
> Hello,
> we are migrating on the new neo4j 2.1.x but after some test we notice that
> with the same code (changed only for the need of transaction and label)
> we are receiving heap space error. The parameters are the same and the
> configuration of the jam are the same, but with the new version we are
> getting this error.
> Is there some hint in the use of the transactions? Are we missing
> something that is required in the new version?
>
> Thanks for your advice,
>
> Mattia Pellè
>
>
>
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