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https://issues.apache.org/jira/browse/LUCENE-4332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13443489#comment-13443489
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Dawid Weiss commented on LUCENE-4332:
-------------------------------------
bq. OK, cool: its something we never did before that I always thought should be
done...
Yes, I checked. Don't let this confuse you:
{code}
<junit4:junit4
dir="@{tempDir}"
tempdir="@{tempDir}"
{code}
the "tempdir" is a temporary folder for all the extra files the runner needs
(spills, event files, etc.), forked JVMs get their own subfolder. See the
"isolateWorkingDirectories" parameter here; it's true by default so omitted:
http://labs.carrotsearch.com/download/randomizedtesting/2.0.0-SNAPSHOT/docs/junit4-ant/Tasks/junit4.html
I looked at the common-build.xml file though and I see only this:
{code}
<!-- Temporary directory in the cwd. -->
<sysproperty key="tempDir" value="."/>
{code}
I was wrong then, the default 'java.io.tmpdir' is not overriden here and I
think it should. I wrote a small test asking for a File.createTempFile and it
did use a global temp (not good).
> Integrate PiTest mutation coverage tool into build
> --------------------------------------------------
>
> Key: LUCENE-4332
> URL: https://issues.apache.org/jira/browse/LUCENE-4332
> Project: Lucene - Core
> Issue Type: Improvement
> Affects Versions: 4.1, 5.0
> Reporter: Greg Bowyer
> Assignee: Greg Bowyer
> Labels: build
> Attachments:
> LUCENE-4332-Integrate-PiTest-mutation-coverage-tool-into-build.patch,
> LUCENE-4332-Integrate-PiTest-mutation-coverage-tool-into-build.patch
>
>
> As discussed briefly on the mailing list, this patch is an attempt to
> integrate the PiTest mutation coverage tool into the lucene build
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