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https://issues.apache.org/jira/browse/LUCENE-8015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16220498#comment-16220498
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Robert Muir commented on LUCENE-8015:
-------------------------------------

Thanks I will look in. Its hard to debug it specifically without fixing 
explains first (we really need to do that, then you can "see" what goes wrong 
from test fails like this). Separately the test is inefficient in that this 
only comes out with beasting many iterations. We should improve the test to 
more often enumerate edges (e.g. min/max values) that look like this so that 
its more efficient.

at a glance it looks like small collection with mostly super-huge docs but then 
one tiny doc. So it may stress some extremes in computations like {{dl/avgdl}} 
type stuff, and expose a hazard in one of the components here. I have to look 
more...

> TestBasicModelIne.testRandomScoring failure
> -------------------------------------------
>
>                 Key: LUCENE-8015
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8015
>             Project: Lucene - Core
>          Issue Type: Task
>            Reporter: Adrien Grand
>
> reproduce with: ant test  -Dtestcase=TestBasicModelIne 
> -Dtests.method=testRandomScoring -Dtests.seed=86E85958B1183E93 
> -Dtests.slow=true -Dtests.locale=vi-VN -Dtests.timezone=Pacific/Tongatapu 
> -Dtests.asserts=true -Dtests.file.encoding=UTF8



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