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https://issues.apache.org/jira/browse/SUREFIRE-1147?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tibor Digana updated SUREFIRE-1147:
-----------------------------------
Fix Version/s: (was: 2.19)
Backlog
> Unbounded memory usage when running MANY tests
> ----------------------------------------------
>
> Key: SUREFIRE-1147
> URL: https://issues.apache.org/jira/browse/SUREFIRE-1147
> Project: Maven Surefire
> Issue Type: Bug
> Components: Maven Surefire Plugin
> Affects Versions: 2.18.1
> Environment: win7, jdk 8u25, mvn 3.2.5
> Reporter: Laurent Claisse
> Assignee: Tibor Digana
> Fix For: Backlog
>
> Attachments: surefire-allocation-traces.png, surefire-leak.png,
> surefire-leak2.png, surefire-leak3.png
>
>
> I'm writing concurrency tests, checking that this thing is reproducible, that
> other thing isn't, and so on. So i repeat tests MANY times like 100_000 (to
> reproduce the leak, the test project is here:
> https://github.com/vandekeiser/parallel-stream-fork-join-pool)
> I see in VisualVM that the culprit is WrappedReportEntry, which indirectly
> holds references to lots of byte[] and char[] (allocation traces and heap
> dump pics are included in attachment)
> I forked and patched maven-surefire-common, and that makes the leak go. I had
> to replace WrappedReportEntry.original by a singleton fake ReportEntry.
> Bebefore that i had replaced
> Utf8RecodingDeferredFileOutputStream.deferredFileOutputStream by a
> NullOutputStream and the leak was lesser but still here.
> My fork of maven-surefire-common is there:
> https://github.com/vandekeiser/maven-surefire/tree/master/maven-surefire-common.
> It IS a patch so i checked the patch checkbox in the issue reporter, but it
> is NOT intended to be distributed of course since it is very brutal and basic.
> Also in my test project i explicitly deactivated reporting, but that doesn't
> make the reporting leak go away at all:
> <disableXmlReport>true</disableXmlReport>
> <printSummary>false</printSummary>
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