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https://issues.apache.org/jira/browse/FLINK-11122?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gary Yao reassigned FLINK-11122:
--------------------------------
Assignee: Gary Yao
> 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
> 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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