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https://issues.apache.org/jira/browse/HADOOP-18803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18029259#comment-18029259
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ASF GitHub Bot commented on HADOOP-18803:
-----------------------------------------
github-actions[bot] commented on PR #6075:
URL: https://github.com/apache/hadoop/pull/6075#issuecomment-3393763762
We're closing this stale PR because it has been open for 100 days with no
activity. This isn't a judgement on the merit of the PR in any way. It's just a
way of keeping the PR queue manageable.
If you feel like this was a mistake, or you would like to continue working
on it, please feel free to re-open it and ask for a committer to remove the
stale tag and review again.
Thanks all for your contribution.
> ClassCastException in test TestRPC#testWrappedStopProxy
> -------------------------------------------------------
>
> Key: HADOOP-18803
> URL: https://issues.apache.org/jira/browse/HADOOP-18803
> Project: Hadoop Common
> Issue Type: Bug
> Components: common, ipc
> Reporter: ConfX
> Priority: Critical
> Labels: pull-request-available
> Attachments: reproduce.sh
>
>
> h2. What happened:
> In HCommon, test TestRPC#testWrappedStopProxy tries to cast
> org.apache.hadoop.ipc.WritableRpcEngine$Invoker to
> org.apache.hadoop.ipc.TestRPC$StoppedInvocationHandler and causes
> ClassCastException.
> h2. Buggy code:
> In TestRPC.java:
> {code:java}
> @Test
> public void testWrappedStopProxy() throws IOException {
> StoppedProtocol wrappedProxy = RPC.getProxy(StoppedProtocol.class,
> StoppedProtocol.versionID, null, conf);
> StoppedInvocationHandler invocationHandler = (StoppedInvocationHandler)
> // <--- Here causes ClassCastException
> Proxy.getInvocationHandler(wrappedProxy);
> ...
> } {code}
> h2. How to reproduce:
> (1) Just directly run test TestRPC#testWrappedStopProxy.
> You can use the reproduce.sh in the attachment to easily reproduce the bug.
> We are happy to provide a patch if this issue is confirmed.
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