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https://issues.apache.org/jira/browse/SUREFIRE-2072?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17521928#comment-17521928
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Mickael Istria commented on SUREFIRE-2072:
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In general, caching some kB here and there can be a good idea, however I have
the impression that with patch for SUREFIRE-1845, each test will consume 64kB
of extra memory even if it actually only has a dozen of characters to cache (as
it's the case for JDT tests). So most of the extra memory consumeption causing
the OOM isn't even used at all.
> Surefire retains too much heap in some case, leading to OutOfMemory
> -------------------------------------------------------------------
>
> Key: SUREFIRE-2072
> URL: https://issues.apache.org/jira/browse/SUREFIRE-2072
> Project: Maven Surefire
> Issue Type: Bug
> Reporter: Mickael Istria
> Priority: Major
>
> Most likely since SuREFIRE-1845, every test execution can retain 64kB of RAM
> (as cache). Which caching is welcome, this cannot scale with some big test
> suites of several thousands of tests and cause OutOfMemoryError.
> This is the case when running Eclipse JDT dom test suite, since
> tycho-surefire-plugin started to adopt surefire 3.0.0.M6, as described in
> https://github.com/eclipse/tycho/issues/879#issuecomment-1096454637
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