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https://issues.apache.org/jira/browse/LUCENE-3808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13219111#comment-13219111
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Michael McCandless commented on LUCENE-3808:
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bq. So... the biggest issue I'm facing is indeed with Random sharing across
threads.
I think we should always (try to!) make a thread-private, consistently seed'd
Random instance...
True, the scheduling of the threads by the JVM will always be a source of
non-determinism, but we shouldn't make that worse. And, for some bugs, having
consistent thread-private Random will make the bug fully reproducible (ie if
the bug isn't a thread scheduling issue).
> Switch LuceneTestCaseRunner to RandomizedRunner. Enforce Random sharing
> contracts. Enforce thread leaks.
> --------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-3808
> URL: https://issues.apache.org/jira/browse/LUCENE-3808
> Project: Lucene - Java
> Issue Type: Sub-task
> Components: general/test
> Reporter: Dawid Weiss
> Assignee: Dawid Weiss
> Priority: Minor
> Fix For: 4.0
>
>
> Dev. branch at: https://github.com/dweiss/lucene_solr/tree/rr
> Switch the runner to RandomizedRunner. Enforce the following:
> - (/) Random sharing will result in a failure/ exception.
> - (/) -Add a validator for testXXX without @Test annotation.- (custom test
> provider added).
> - Thread leaks will result in a failure (add lingering if needed, but no
> ignores).
> - Add a validator for @Test method overrides (no-no).
> - Add a validator for static hook shadowing (no-no).
> - Modify custom execution groups in LTC to be real @Groups.
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