[Commented] (SUREFIRE-1881) Java agent printing to native console makes build block when using SurefireForkNodeFactory

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[Commented] (SUREFIRE-1881) Java agent printing to native console makes build block when using SurefireForkNodeFactory

Tibor Digana (Jira)

    [ https://issues.apache.org/jira/browse/SUREFIRE-1881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17288823#comment-17288823 ]

Alexander Kriegisch commented on SUREFIRE-1881:
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[~tibordigana] *PING!* _(Message to be removed after we continue our conversation.)_

> Java agent printing to native console makes build block when using SurefireForkNodeFactory
> ------------------------------------------------------------------------------------------
>
>                 Key: SUREFIRE-1881
>                 URL: https://issues.apache.org/jira/browse/SUREFIRE-1881
>             Project: Maven Surefire
>          Issue Type: Bug
>          Components: Maven Failsafe Plugin, Maven Surefire Plugin
>    Affects Versions: 3.0.0-M5
>            Reporter: Alexander Kriegisch
>            Priority: Major
>         Attachments: image-2021-02-08-12-07-34-183.png, maven-failsafe-debug-log.txt, screenshot-1.png
>
>
> This is a follow-up to SUREFIRE-1788 which was closed prematurely even though there still were open issues which were discussed there initially. Basically the situation is as follows:
>  * I use Java agents writing to stdOut and stdErr in my tests.
>  * I was annoyed that Surefire/Failsafe were writing lots of {{[WARNING] Corrupted STDOUT by directly writing to native stream in forked JVM}} lines into {{*-jvmRun1.dumpstream}} files. [~tibordigana] then told me to use {{<forkNode implementation="org.apache.maven.plugin.surefire.extensions.SurefireForkNodeFactory"/>}} in my POM in order to fix the issue.
>  * I tried this in version 3.0.0-M5, but unfortunately, it makes Surefire/Failsafe freeze if a Java agent prints something to stdOut or stdErr. This happens both in M5 and in M6-SNAPSHOT after both SUREFIRE-1788 and SUREFIRE-1809 have been merged in already.
>  * My [sample project|https://github.com/kriegaex/Maven_Surefire_PrintToConsoleProblems] reproduces the issue as soon as you uncomment the option in the POM and run {{mvn clean verify}}.
>  * The second issue is: *Not* using this option leads to garbled log output when a Java agent writes to both stdOut and stdErr before/during tests. See comments in class [{{Agent.DummyTransformer}}|https://github.com/kriegaex/Maven_Surefire_PrintToConsoleProblems/blob/master/src/main/java/de/scrum_master/dummy/Agent.java] for examples for garbled log lines and also comments in [pom.xml|https://github.com/kriegaex/Maven_Surefire_PrintToConsoleProblems/blob/master/pom.xml#L36] for further information.
>  * If the garbled output would also appear with this option activated, cannot be tested at present due to the Surefire/Failsafe freeze. I will re-test that after the freeze has been fixed and before this issue can be closed.



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