java.lang.NullPointerException

GitHub | twilmes | 4 weeks ago
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    Tinkerpop 3.1.1 OLAP (Spark) Gremlin error on filter query: The properties of an adjacent vertex can not be read or updated

    Google Groups | 9 months ago | Jen
    java.lang.UnsupportedOperationException: The properties of an adjacent vertex can not be read or updated
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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.janusgraph.graphdb.tinkerpop.optimize.JanusGraphVertexStep.flatMap()
    2. org.janusgraph.graphdb
      JanusGraphVertexStep.flatMap
      1. org.janusgraph.graphdb.tinkerpop.optimize.JanusGraphVertexStep.flatMap(JanusGraphVertexStep.java:109)
      1 frame
    3. org.apache.tinkerpop
      FlatMapStep.processNextStart
      1. org.apache.tinkerpop.gremlin.process.traversal.step.map.FlatMapStep.processNextStart(FlatMapStep.java:47)
      1 frame
    4. org.janusgraph.graphdb
      JanusGraphVertexStep.processNextStart
      1. org.janusgraph.graphdb.tinkerpop.optimize.JanusGraphVertexStep.processNextStart(JanusGraphVertexStep.java:102)
      1 frame
    5. org.apache.tinkerpop
      Console$_closure3.doCall
      1. org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:140)
      2. org.apache.tinkerpop.gremlin.process.traversal.step.util.ExpandableStepIterator.next(ExpandableStepIterator.java:54)
      3. org.apache.tinkerpop.gremlin.process.traversal.step.map.MatchStep$MatchEndStep.processNextStart(MatchStep.java:460)
      4. org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:140)
      5. org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.hasNext(DefaultTraversal.java:147)
      6. org.apache.tinkerpop.gremlin.process.traversal.step.map.MatchStep.standardAlgorithm(MatchStep.java:313)
      7. org.apache.tinkerpop.gremlin.process.traversal.step.util.ComputerAwareStep.processNextStart(ComputerAwareStep.java:47)
      8. org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:140)
      9. org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.hasNext(DefaultTraversal.java:147)
      10. org.apache.tinkerpop.gremlin.console.Console$_closure3.doCall(Console.groovy:182)
      10 frames