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From "Dawid Weiss (JIRA)" <>
Subject [jira] [Resolved] (LUCENE-4002) Running tests with internal JVM diagnostic options (such as -verbose:*) will fail.
Date Wed, 02 May 2012 10:46:51 GMT


Dawid Weiss resolved LUCENE-4002.

    Resolution: Fixed

Fixed by randomizedtesting 1.4.0
> Running tests with internal JVM diagnostic options (such as -verbose:*) will fail.
> ----------------------------------------------------------------------------------
>                 Key: LUCENE-4002
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: general/test
>            Reporter: Dawid Weiss
>            Assignee: Dawid Weiss
>             Fix For: 4.0
> Passing JVM options that dump something to output streams before they are intercepted
(-verbose:gc, -verbose:class) will break the communication
> between the runner and the master.
> Currently junit4 communicates with forked processes via stdout or stderr (depending on
the JVM and which stream the JVM uses to dump crash infos). This is done for efficiency since
it's a natural blocking pipe between the two processes. I forgot that the jvm can:
> 1) use process streams to dump verbose logs (gc, classes, jit),
> 2) use process streams directly, bypassing System.* overrides, to dump warnings.
> This can be solved my moving the communication layer to another pipe or to a socket.
I'll play with the options.

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