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https://issues.apache.org/jira/browse/FLINK-1951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14526873#comment-14526873
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ASF GitHub Bot commented on FLINK-1951:
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Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/641#issuecomment-98782588
Looks very good.
+1 to merge as is
> NullPointerException in DeltaIteration when no ForwardedFileds
> --------------------------------------------------------------
>
> Key: FLINK-1951
> URL: https://issues.apache.org/jira/browse/FLINK-1951
> Project: Flink
> Issue Type: Bug
> Components: Iterations
> Affects Versions: 0.9
> Reporter: Vasia Kalavri
> Assignee: Fabian Hueske
> Priority: Critical
>
> The following exception is thrown by the Connected Components example, if the
> @ForwardedFieldsFirst("*") annotation from the ComponentIdFilter join is
> removed:
> Caused by: java.lang.NullPointerException
> at
> org.apache.flink.examples.java.graph.ConnectedComponents$ComponentIdFilter.join(ConnectedComponents.java:186)
> at
> org.apache.flink.examples.java.graph.ConnectedComponents$ComponentIdFilter.join(ConnectedComponents.java:1)
> at
> org.apache.flink.runtime.operators.JoinWithSolutionSetSecondDriver.run(JoinWithSolutionSetSecondDriver.java:198)
> at
> org.apache.flink.runtime.operators.RegularPactTask.run(RegularPactTask.java:496)
> at
> org.apache.flink.runtime.iterative.task.AbstractIterativePactTask.run(AbstractIterativePactTask.java:139)
> at
> org.apache.flink.runtime.iterative.task.IterationIntermediatePactTask.run(IterationIntermediatePactTask.java:92)
> at
> org.apache.flink.runtime.operators.RegularPactTask.invoke(RegularPactTask.java:362)
> at
> org.apache.flink.runtime.execution.RuntimeEnvironment.run(RuntimeEnvironment.java:217)
> at java.lang.Thread.run(Thread.java:745)
> [Code | https://github.com/vasia/flink/tree/cc-test] and [dataset |
> http://snap.stanford.edu/data/com-DBLP.html] to reproduce.
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