Using neo4j 1.4.1 we had some exceptions like
15.11.2011 18:16:11 org.structr.core.entity.AbstractNode setProperty
WARNUNG: Exception in setProperty
org.neo4j.kernel.impl.nioneo.store.InvalidRecordException: Record[22]
not in use
at
org.neo4j.kernel.impl.nioneo.store.NodeStore.getRecord(NodeStore.java:178)
at org.neo4j.kernel.impl.nioneo.store.NodeStore.getRecord(NodeStore.java:95)
at
org.neo4j.kernel.impl.nioneo.xa.WriteTransaction.nodeLoadProperties(WriteTransaction.java:1043)
at
org.neo4j.kernel.impl.persistence.PersistenceManager.loadNodeProperties(PersistenceManager.java:114)
at
org.neo4j.kernel.impl.core.NodeManager.loadProperties(NodeManager.java:675)
at org.neo4j.kernel.impl.core.NodeImpl.loadProperties(NodeImpl.java:115)
at
org.neo4j.kernel.impl.core.Primitive.ensureFullProperties(Primitive.java:648)
at org.neo4j.kernel.impl.core.Primitive.hasProperty(Primitive.java:283)
at org.neo4j.kernel.impl.core.NodeProxy.hasProperty(NodeProxy.java:150)
The exception was thrown when our new REST API was under heavy load. In
our testcase, we deleted nodes in a while-true-loop while creating nodes
in another. After some concurrent requests, the nodes were not cleanly
auto-removed from the (manual) index. So some nodes were still returned
by an index search, but the above exception was thrown.
Before fixing, our code for removing looked like this (AbstractNode and
StructrRelationship are just wrapper classes for Neo's Node and
Relationship).
[...]
// 1: delete relationships
if(obj instanceof AbstractNode) {
List<StructrRelationship> rels =
((AbstractNode)obj).getRelationships();
for(StructrRelationship rel : rels) {
success &= rel.delete();
}
}
// 2: delete object
success &= obj.delete();
[...]
Removing the node from the index before deleting it resolved the exception.
[...]
// 1: remove node from index
Services.command(securityContext,
RemoveNodeFromIndex.class).execute(obj);
// 2: delete relationships
if(obj instanceof AbstractNode) {
List<StructrRelationship> rels =
((AbstractNode)obj).getRelationships();
for(StructrRelationship rel : rels) {
success &= rel.delete();
}
}
// 3: delete object
success &= obj.delete();
[...]
Maybe this helps someone.
Tonight, I will do a test with neo4j 1.5 and report back.
Greetings
Axel
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