Hi,
I am using Neo4j 2.1.2 and I have an unmanaged extension in which I am
trying to create the following relationships in separate concurrent
transactions:
1) (b)-[:REL]->(a)
2) (c)-[:REL]->(a)
I am never deleting any relationship and I am getting this error:
org.neo4j.kernel.DeadlockDetectedException: LockClient[118] can't wait on
resource RWLock[NODE(429288), hash=1375407138] since => LockClient[118]
<-[:HELD_BY]- RWLock[NODE(429304), hash=1035143818] <-[:WAITING_FOR]-
LockClient[119] <-[:HELD_BY]- RWLock[NODE(429288), hash=1375407138]
at
org.neo4j.kernel.impl.locking.community.RagManager.checkWaitOnRecursive(RagManager.java:211)
at
org.neo4j.kernel.impl.locking.community.RagManager.checkWaitOnRecursive(RagManager.java:238)
at
org.neo4j.kernel.impl.locking.community.RagManager.checkWaitOn(RagManager.java:178)
at
org.neo4j.kernel.impl.locking.community.RWLock.deadlockGuardedWait(RWLock.java:547)
at
org.neo4j.kernel.impl.locking.community.RWLock.acquireWriteLock(RWLock.java:319)
at
org.neo4j.kernel.impl.locking.community.LockManagerImpl.getWriteLock(LockManagerImpl.java:68)
at
org.neo4j.kernel.impl.locking.community.CommunityLockClient.acquireExclusive(CommunityLockClient.java:73)
at
org.neo4j.kernel.impl.api.LockingStatementOperations.relationshipCreate(LockingStatementOperations.java:215)
at
org.neo4j.kernel.impl.api.OperationsFacade.relationshipCreate(OperationsFacade.java:515)
at
org.neo4j.kernel.impl.core.NodeProxy.createRelationshipTo(NodeProxy.java:455)
.......(snipped).......
I've read the section called Deadlocks
<http://docs.neo4j.org/chunked/milestone/transactions-deadlocks.html> in
the documentation but I don't think what I am doing should lead to the
deadlock.
Any help would be appreciated.
Thanks!
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