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https://issues.apache.org/jira/browse/LUCENE-4252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13425594#comment-13425594
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Dawid Weiss edited comment on LUCENE-4252 at 7/31/12 7:48 AM:
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This is useful in general. I've added this to randomized testing package,
modifying Robert's code slightly to:
- exclude static final fields (typically constants that cannot be erased),
- exclude fields of primitive types,
- account for superclasses of the suite class (optional but turned on by
default),
- include sorted RAM usage info for accounted fields in the assertion thrown.
Exclusion rules are customizable via rule subclassing (accept(Field) method).
was (Author: dweiss):
This is useful in general. I've added this to randomized testing package,
modifying Robert's code slightly to:
- exclude static final fields (typically constants that cannot be erased);
- exclude fields of primitive types
- include sorted RAM usage info for accounted fields in the assertion thrown.
Exclusion rules are customizable via rule subclassing (accept(Field) method).
> Detect/Fail tests when they leak RAM in static fields
> -----------------------------------------------------
>
> Key: LUCENE-4252
> URL: https://issues.apache.org/jira/browse/LUCENE-4252
> Project: Lucene - Core
> Issue Type: Test
> Components: general/test
> Reporter: Robert Muir
> Assignee: Dawid Weiss
> Attachments: LUCENE-4252.patch, LUCENE-4252.patch, sfi.patch
>
>
> We run our junit tests without firing up a JVM each time.
> But some tests initialize lots of stuff in @BeforeClass and don't properly
> null it out in an @AfterClass, which can cause a subsequent test in the same
> JVM to OOM, which is difficult to debug.
> Inspiration for this was me committing Mike's cool TestPostingsFormat, which
> forgot to do this: then we were seeing OOMs in several jenkins runs.
> We should try to detect these leaks in LuceneTestCase with RAMUsageEstimator
> and fail the test.
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