Error when creating nodes with the same label

[smiroslav]

Hi,

I am getting error when trying to add two nodes with the same label. The same code works in TinkerPop.
For the backend I am using Apache Cassandra, leveraging Azure CosmosDB.

gremlin> g.addV('label1')
==>v[40968312]
gremlin> g.addV('label1')
java.lang.NullPointerException

Error from the server log

1854272 [gremlin-server-exec-13] WARN  org.apache.tinkerpop.gremlin.server.op.AbstractEvalOpProcessor  - Exception processing a script on request [RequestMessage{, requestId=3f85f28b-38ea-4863-bb74-6c1685c90d3b, op='eval', processor='', args={gremlin=g.addV('f8'), userAgent=Gremlin Console/1.21.0, batchSize=64}}].
java.lang.NullPointerException
	at org.janusgraph.graphdb.types.VertexLabelVertex.isPartitioned(VertexLabelVertex.java:41)
	at org.janusgraph.graphdb.database.idassigner.VertexIDAssigner.getVertexIDType(VertexIDAssigner.java:373)
	at org.janusgraph.graphdb.database.idassigner.VertexIDAssigner.assignID(VertexIDAssigner.java:163)
	at org.janusgraph.graphdb.database.StandardJanusGraph.assignID(StandardJanusGraph.java:517)
	at org.janusgraph.graphdb.transaction.StandardJanusGraphTx.addVertex(StandardJanusGraphTx.java:585)
	at org.janusgraph.graphdb.tinkerpop.JanusGraphBlueprintsTransaction.addVertex(JanusGraphBlueprintsTransaction.java:127)
	at org.janusgraph.graphdb.tinkerpop.JanusGraphBlueprintsGraph.addVertex(JanusGraphBlueprintsGraph.java:143)
	at org.janusgraph.graphdb.tinkerpop.JanusGraphBlueprintsGraph.addVertex(JanusGraphBlueprintsGraph.java:59)
	at org.apache.tinkerpop.gremlin.process.traversal.step.map.AddVertexStartStep.processNextStart(AddVertexStartStep.java:102)
	at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:150)
	at org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.hasNext(DefaultTraversal.java:222)
	at org.apache.tinkerpop.gremlin.server.op.AbstractOpProcessor.handleIterator(AbstractOpProcessor.java:97)
	at org.apache.tinkerpop.gremlin.server.op.AbstractEvalOpProcessor.lambda$evalOpInternal$5(AbstractEvalOpProcessor.java:263)
	at org.apache.tinkerpop.gremlin.groovy.engine.GremlinExecutor.lambda$eval$0(GremlinExecutor.java:283)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)

[vtslab]

Can you please provide the gremlin-server.yaml file and the properties file for opening the graph?
Can you reproduce this on a fresh graph with local Cassandra?

As you already say, your lines work without problem on TinkerGraph, but the same holds for JanusGraph using the conf/janusgraph-inmemory.properties file of janusgraph-0.6.0.

[smiroslav]

Thanks for answering. Afterwards I tried with local Cassandra and I did not have issues.