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Posted to issues@flink.apache.org by "Gary Yao (JIRA)" <ji...@apache.org> on 2018/12/13 13:08:00 UTC

[jira] [Closed] (FLINK-11122) SafetyNetCloseableRegistryTest fails with ClassCastException

     [ https://issues.apache.org/jira/browse/FLINK-11122?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gary Yao closed FLINK-11122.
----------------------------
    Resolution: Fixed

Fixed via e546069c300a51de47e6f752ff1b7491683b2356

> SafetyNetCloseableRegistryTest fails with ClassCastException
> ------------------------------------------------------------
>
>                 Key: FLINK-11122
>                 URL: https://issues.apache.org/jira/browse/FLINK-11122
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Tests
>            Reporter: Gary Yao
>            Assignee: Gary Yao
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.8.0
>
>
> When compiling and running {{SafetyNetCloseableRegistryTest}} with Java 9, some tests fail with a {{ClassCastException}}
> {noformat}
> java.lang.AssertionError: java.lang.ClassCastException: org.apache.flink.core.fs.local.LocalDataOutputStream cannot be cast to org.apache.flink.core.fs.WrappingProxyCloseable
> 	at org.apache.flink.core.fs.SafetyNetCloseableRegistry$PhantomDelegatingCloseableRef.<init>(SafetyNetCloseableRegistry.java:156)
> 	at org.apache.flink.core.fs.SafetyNetCloseableRegistry.doRegister(SafetyNetCloseableRegistry.java:99)
> 	at org.apache.flink.core.fs.SafetyNetCloseableRegistry.doRegister(SafetyNetCloseableRegistry.java:50)
> 	at org.apache.flink.util.AbstractCloseableRegistry.registerCloseable(AbstractCloseableRegistry.java:79)
> 	at org.apache.flink.core.fs.ClosingFSDataOutputStream.wrapSafe(ClosingFSDataOutputStream.java:101)
> 	at org.apache.flink.core.fs.SafetyNetWrapperFileSystem.create(SafetyNetWrapperFileSystem.java:127)
> 	at org.apache.flink.core.fs.SafetyNetCloseableRegistryTest$3.go(SafetyNetCloseableRegistryTest.java:120)
> 	at org.apache.flink.core.testutils.CheckedThread.run(CheckedThread.java:74)
> {noformat}
> This is due to the problematic signature in {{WrappingProxyUtil#stripProxy(T)}}, which expects a generic type {{T}} and also returns {{T}}. 



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