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From "Vasia Kalavri (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-1951) NullPointerException in DeltaIteration when no ForwardedFileds
Date Mon, 27 Apr 2015 15:13:38 GMT
Vasia Kalavri created FLINK-1951:
------------------------------------

             Summary: 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: Minor


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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