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https://issues.apache.org/jira/browse/TINKERPOP-2345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17079204#comment-17079204
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ASF GitHub Bot commented on TINKERPOP-2345:
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spmallette commented on pull request #1272: TINKERPOP-2345 Improved error
message for bad value for math()
URL: https://github.com/apache/tinkerpop/pull/1272
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> NullPointerException when Map key is not found for math()
> ---------------------------------------------------------
>
> Key: TINKERPOP-2345
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2345
> Project: TinkerPop
> Issue Type: Bug
> Components: process
> Affects Versions: 3.4.6
> Reporter: Stephen Mallette
> Priority: Minor
>
> We could probably have a nicer error here:
> {code}
> gremlin> g.V().hasLabel('person').elementMap().as('x').math('x').by('aged')
> java.lang.NullPointerException
> Type ':help' or ':h' for help.
> Display stack trace? [yN]y
> java.lang.NullPointerException
> at
> org.apache.tinkerpop.gremlin.process.traversal.step.map.MathStep.map(MathStep.java:73)
> at
> org.apache.tinkerpop.gremlin.process.traversal.step.map.MathStep.map(MathStep.java:47)
> at
> org.apache.tinkerpop.gremlin.process.traversal.step.map.MapStep.processNextStart(MapStep.java:37)
> at
> org.apache.tinkerpop.gremlin.process.traversal.step.map.MathStep.processNextStart(MathStep.java:63)
> at
> org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143)
> at
> org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.hasNext(DefaultTraversal.java:197)
> at
> org.apache.tinkerpop.gremlin.console.Console$_closure3.doCall(Console.groovy:255)
> {code}
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