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https://issues.apache.org/jira/browse/LUCENE-2853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Smiley updated LUCENE-2853:
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Fix Version/s: (was: 4.7)
4.8
> Improve random seed portability for test cases
> ----------------------------------------------
>
> Key: LUCENE-2853
> URL: https://issues.apache.org/jira/browse/LUCENE-2853
> Project: Lucene - Core
> Issue Type: Bug
> Components: general/build
> Affects Versions: 4.0-ALPHA
> Reporter: Robert Muir
> Fix For: 4.8
>
>
> Currently, tests get a random seed, and several possibilities can be randomly
> assigned, or fixed to
> specific values with -Dtests.codec or -Dtests.directory.
> The default values for these sort of things is 'random'.
> I think it would be a great improvement if we:
> * improved our code here so that we always consume the same amount from the
> Random. this means for example, if you specific
> -Dtests.directory=RAMDirectory, we should consume a wasted int, where we
> would normally pick one from random.
> * in 3.x, i think its worth it to actually consume wasted ints where 4.0
> picks the codec.
> With these changes, you could ideally (in many situations situations)
> # take a failure and modify parameters to see if its specific to a particular
> codec or directory, or a general problem
> # take a failure from trunk and see if it affects 3.x
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