I am using 1.4 M03.
Not sure if this is already reported/fixed.

java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
at java.util.HashMap$KeyIterator.next(HashMap.java:828)
at
org.neo4j.kernel.impl.core.NodeImpl.getAllRelationships(NodeImpl.java:120)
at org.neo4j.kernel.impl.core.NodeImpl.getRelationships(NodeImpl.java:182)
at org.neo4j.kernel.impl.core.NodeProxy.getRelationships(NodeProxy.java:72)
at
org.neo4j.kernel.StandardExpander$AllExpander.doExpand(StandardExpander.java:279)
at
org.neo4j.kernel.StandardExpander$FilteringExpander.doExpand(StandardExpander.java:605)
at
org.neo4j.kernel.StandardExpander$RelationsipExpansion.iterator(StandardExpander.java:170)
at
org.neo4j.graphalgo.impl.path.ShortestPath$DirectionData$1.createNestedIterator(ShortestPath.java:267)
at
org.neo4j.graphalgo.impl.path.ShortestPath$DirectionData$1.createNestedIterator(ShortestPath.java:262)
at
org.neo4j.helpers.collection.NestingIterator.fetchNextOrNull(NestingIterator.java:67)
at
org.neo4j.helpers.collection.PrefetchingIterator.hasNext(PrefetchingIterator.java:55)
at
org.neo4j.graphalgo.impl.path.ShortestPath$DirectionData.fetchNextRelOrNull(ShortestPath.java:338)
at
org.neo4j.graphalgo.impl.path.ShortestPath$DirectionData.fetchNextOrNull(ShortestPath.java:279)
at
org.neo4j.graphalgo.impl.path.ShortestPath$DirectionData.fetchNextOrNull(ShortestPath.java:209)
at
org.neo4j.helpers.collection.PrefetchingIterator.hasNext(PrefetchingIterator.java:55)
at
org.neo4j.graphalgo.impl.path.ShortestPath.internalPaths(ShortestPath.java:120)
at
org.neo4j.graphalgo.impl.path.ShortestPath.findSinglePath(ShortestPath.java:97)
at pathFinder.findSinglePath(startNode, endNode);


Appreciate your help.

John
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