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https://issues.apache.org/jira/browse/FLINK-12102?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16813249#comment-16813249
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Liya Fan commented on FLINK-12102:
----------------------------------
This should be caused by PowerMock, which tries to invoke some methods by
reflection. For example:
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by
org.powermock.reflect.internal.WhiteboxImpl
(file:/home/hadoop/.m2/repository/org/powermock/powermock-reflect/2.0.0-RC.4/powermock-reflect-2.0.0-RC.4.jar)
to method java.lang.Object.clone()
WARNING: Please consider reporting this to the maintainers of
org.powermock.reflect.internal.WhiteboxImpl
WARNING: Use --illegal-access=warn to enable warnings of further illegal
reflective access operations
WARNING: All illegal access operations will be denied in a future release
This problem also occurs with JDK11:
[https://github.com/powermock/powermock/issues/969]
However, it seems that the authors of PowerMock have no attempt to fix it:
[https://github.com/powermock/powermock/issues/864]
> FlinkILoopTest fails on Java 9
> ------------------------------
>
> Key: FLINK-12102
> URL: https://issues.apache.org/jira/browse/FLINK-12102
> Project: Flink
> Issue Type: Sub-task
> Components: Scala Shell
> Reporter: Chesnay Schepler
> Assignee: Liya Fan
> Priority: Major
> Fix For: 1.9.0
>
>
> {code}
> java.lang.NullPointerException
> at
> org.apache.flink.api.java.FlinkILoopTest.testConfigurationForwarding(FlinkILoopTest.java:89)
> {code}
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