Deleting a node doesn't remove it from its indexes because there's no hard link between a node and its indexes so it would be a costly operation. It merely hides it from IndexHits and puts it up for deletion later (read-repair). Are you getting the exception in another thread and/or is that node included in some other IndexHits? If that's the case then it might be a race condition.
2011/11/17 Axel Morgner <a...@morgner.de> > > > It cannot be only that. By the looks of it some part of your code uses > > Node#hasProperty after Node#delete, which is illegal and that's what's > > causing it. > Yes, that's right. The exception is expected behaviour. But why the > node's still in the index? > > I think it's just a timing problem in our code. It's happening only > under race conditions when creating and deleting nodes with multiple > threads. Maybe it's because after node.delete() the deleting thread > doesn't immediately remove it from the index while another thread > accesses the node via index lookup, and of course fails to use the node > as it has already the notInUse flag persisted. Seems that the node is > then kind of locked. I don't know ... > > It's a bit weird that it's so easy to bring the database into an > inconsistant state with a node still being in the index, but our fix is > working for us so far, and I understood what we did wrong. > > Sorry that I don't have more time to sort it out. But if you really > think that it's worth to have a deeper look into it, I could setup a > small webapp using the libraries we're using here (it's all available at > Github [1]). > > [1] > > https://github.com/structr/structr/blob/develop/structr/structr-core/src/main/java/org/structr/rest/constraint/ResourceConstraint.java > > > Greetings > > Axel > _______________________________________________ > Neo4j mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > -- Mattias Persson, [matt...@neotechnology.com] Hacker, Neo Technology www.neotechnology.com _______________________________________________ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
