Vasia Kalavri created FLINK-1951:
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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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