RFR: 7904101: intermittent failure in StreamsTest.agentvm.ok [v3]

[Vladimir Petko]

On Tue, 2 Dec 2025 12:06:17 GMT, Christian Stein <cstein at openjdk.org> wrote:

> > Alternative:
> > -Disable the test and make no assumptions about contents of the agent vm process output.
> 
> Before looking deeper into the implementation, do I read this correctly, the a test makes "assumptions about contents of the agent vm process output"?

Yes, the test writes to the file descriptor [directly](https://github.com/openjdk/jtreg/blob/a6a32dd7c8250b4c06e904ccc94ffbcd8f009a43/test/streams/FileDescriptorTest.java#L42). The test is ran in the agent mode,  and the agent server is supposed to capture stdout/stderr of the test and add it to the jtr. 
The existing implemention has no synchronization so the log lines can be lost causing intermittent test failures.

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PR Comment: https://git.openjdk.org/jtreg/pull/295#issuecomment-3603701113