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https://issues.apache.org/jira/browse/TINKERPOP-1105?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Marko A. Rodriguez closed TINKERPOP-1105.
-----------------------------------------
Resolution: Fixed
Assignee: Marko A. Rodriguez
Fix Version/s: 3.1.2-incubating
> SparkGraphComputer / Null Pointer Exceptions for properties traversals
> ----------------------------------------------------------------------
>
> Key: TINKERPOP-1105
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1105
> Project: TinkerPop
> Issue Type: Bug
> Components: hadoop
> Affects Versions: 3.1.1-incubating
> Environment: 3.1.1 with Spark 1.5.2
> Also occurs with earlier versions of TinkerPop including 3.1.0 and Spark 1.5.1
> Reporter: David Robinson
> Assignee: Marko A. Rodriguez
> Fix For: 3.1.2-incubating
>
>
> Issue discussed here on the mailing list:
> https://groups.google.com/forum/#!topic/gremlin-users/i1cOLIkIF4Q
> Queries run with SparkGraphComputer involving the properties() query
> sometimes produce null pointer exceptions as seen by these traces.
> gremlin> g.V().propertyMap()
> ==>[name:[vp[name->josh]], age:[vp[age->32]]]
> ==>[name:[vp[name->marko]], age:[vp[age->29]]]
> ==>[name:[vp[name->peter]], age:[vp[age->35]]]
> ==>[name:[vp[name->lop]], lang:[vp[lang->java]]]
> ==>[name:[vp[name->ripple]], lang:[vp[lang->java]]]
> ==>[name:[vp[name->vadas]], age:[vp[age->27]]]
> gremlin> g.V().out().out().not(__.has('name','ripple')).properties()
> java.lang.NullPointerException
> Display stack trace? [yN] n
> gremlin> g.V().out().in().not(__.has('name','ripple')).properties()
> java.lang.NullPointerException
> Display stack trace? [yN] n
> gremlin>
> g.V().out('created').in('created').not(__.has('name','ripple')).properties()
> java.lang.NullPointerException
> Display stack trace? [yN] n
> gremlin>
> g.V().out('created').in('created').not(__.has('name','ripple')).propertyMap()
> ==>[name:[vp[name->josh]], age:[vp[age->32]]]
> ==>[name:[vp[name->josh]], age:[vp[age->32]]]
> ==>[name:[vp[name->josh]], age:[vp[age->32]]]
> ==>[name:[vp[name->josh]], age:[vp[age->32]]]
> ==>[name:[vp[name->marko]], age:[vp[age->29]]]
> ==>[name:[vp[name->marko]], age:[vp[age->29]]]
> ==>[name:[vp[name->marko]], age:[vp[age->29]]]
> ==>[name:[vp[name->peter]], age:[vp[age->35]]]
> ==>[name:[vp[name->peter]], age:[vp[age->35]]]
> ==>[name:[vp[name->peter]], age:[vp[age->35]]]
> gremlin>
> g.V().out('created').in('created').not(__.has('name','ripple')).values()
> ==>josh
> ==>josh
> ==>josh
> ==>josh
> ==>32
> ==>32
> ==>32
> ==>32
> ==>marko
> ==>marko
> ==>marko
> ==>29
> ==>29
> ==>29
> ==>peter
> ==>peter
> ==>peter
> ==>35
> ==>35
> ==>35
> gremlin> g.V().properties('name').count()
> ==>6
> gremlin> graph = GraphFactory.open('conf/hadoop/hadoop-gryo.properties')
> ==>hadoopgraph[gryoinputformat->gryooutputformat]
> gremlin> g = graph.traversal(computer(SparkGraphComputer))
> ==>graphtraversalsource[hadoopgraph[gryoinputformat->gryooutputformat],
> sparkgraphcomputer]
> gremlin> g.V().out().in().not(__.has('name','ripple')).properties()
> java.lang.NullPointerException
> Display stack trace? [yN] y
> java.lang.NullPointerException
> at
> org.apache.tinkerpop.gremlin.structure.util.Attachable$Method.getProperty(Attachable.java:236)
> at
> org.apache.tinkerpop.gremlin.structure.util.Attachable$Method.lambda$get$19(Attachable.java:98)
> at
> org.apache.tinkerpop.gremlin.structure.util.Attachable$Method$$Lambda$98/1054035701.apply(Unknown
> Source)
> at
> org.apache.tinkerpop.gremlin.structure.util.Attachable.attach(Attachable.java:63)
> at
> org.apache.tinkerpop.gremlin.process.computer.traversal.step.map.ComputerResultStep.processNextStart(ComputerResultStep.java:89)
> at
> org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:140)
> at
> org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.hasNext(DefaultTraversal.java:147)
> at
> org.apache.tinkerpop.gremlin.console.Console$_closure3.doCall(Console.groovy:205)
> at sun.reflect.GeneratedMethodAccessor74.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at
> org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
> at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
> at
> org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294)
> at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1019)
> at
> org.codehaus.groovy.tools.shell.Groovysh.setLastResult(Groovysh.groovy:443)
> at
> org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:218)
> at org.codehaus.groovy.tools.shell.Groovysh.execute(Groovysh.groovy:187)
> at org.codehaus.groovy.tools.shell.Shell.leftShift(Shell.groovy:122)
> at org.codehaus.groovy.tools.shell.ShellRunner.work(ShellRunner.groovy:95)
> at
> org.codehaus.groovy.tools.shell.InteractiveShellRunner.super$2$work(InteractiveShellRunner.groovy)
> at sun.reflect.GeneratedMethodAccessor72.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at
> org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
> at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
> at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1210)
> at
> org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuperN(ScriptBytecodeAdapter.java:132)
> at
> org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuper0(ScriptBytecodeAdapter.java:152)
> at
> org.codehaus.groovy.tools.shell.InteractiveShellRunner.work(InteractiveShellRunner.groovy:124)
> at org.codehaus.groovy.tools.shell.ShellRunner.run(ShellRunner.groovy:59)
> at
> org.codehaus.groovy.tools.shell.InteractiveShellRunner.super$2$run(InteractiveShellRunner.groovy)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at
> org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
> at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
> at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1210)
> at
> org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuperN(ScriptBytecodeAdapter.java:132)
> at
> org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuper0(ScriptBytecodeAdapter.java:152)
> at
> org.codehaus.groovy.tools.shell.InteractiveShellRunner.run(InteractiveShellRunner.groovy:83)
> at
> org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:218)
> at org.apache.tinkerpop.gremlin.console.Console.<init>(Console.groovy:144)
> at
> org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:218)
> at org.apache.tinkerpop.gremlin.console.Console.main(Console.groovy:305)
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