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ASF GitHub Bot commented on FLINK-1951: --------------------------------------- Github user asfgit closed the pull request at: https://github.com/apache/flink/pull/641 > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)