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https://issues.apache.org/jira/browse/LUCENE-4650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13542049#comment-13542049
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Dawid Weiss commented on LUCENE-4650:
-------------------------------------
randomizedtesting 2.0.8 has some tweaks to make it work. I tend to believe a
"real" solution doesn't exist, this is the best I could come up with -- there
is a preallocated last-resort memory pool of 1MB that gets released when OOM is
thrown. A small delay is introduced to allow concurrent GC threads to do their
job, then the process attempts to serialize the exception and write back some
messages about the OOM.
It still doesn't _always_ work: I had some random OOMs even in
System.out.printlns on J9, whether the GC does or doesn't reclaim the released
memory is unknown and is an inherent race condition, the VM itself (hotspot)
seems to require some memory when it does Runtime.halt; under low-memory
conditions it always returns with exit code 1, regardless of the status passed
to halt.
PermGen space errors are even more difficult. I tried preloading classes at
startup but this turns out to be such an unholy mess (and still without the
guarantee that something is not omitted) that I reverted this change. To my
defense -- I tried with Maven's surefire and it also craps out (hangs) under
such conditions.
> Test framework should be more robust under OOM conditions
> ---------------------------------------------------------
>
> Key: LUCENE-4650
> URL: https://issues.apache.org/jira/browse/LUCENE-4650
> Project: Lucene - Core
> Issue Type: Bug
> Components: general/test
> Reporter: Dawid Weiss
> Assignee: Dawid Weiss
> Priority: Minor
> Fix For: 4.1, 5.0
>
>
> When tests OOM (or run out of their permgen space) things to wild (hung
> runner, etc.).
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