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https://issues.apache.org/jira/browse/LUCENE-3829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13217417#comment-13217417
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Uwe Schindler commented on LUCENE-3829:
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Good catch! maybe we need per-thread cloning like for stored fields?
At least all this is more funny than stupid FC insanity by reader wrapping...
DOH!
> Lucene40 codec's DocValues DirectSource impls aren't thread-safe
> ----------------------------------------------------------------
>
> Key: LUCENE-3829
> URL: https://issues.apache.org/jira/browse/LUCENE-3829
> Project: Lucene - Java
> Issue Type: Bug
> Reporter: Michael McCandless
> Fix For: 4.0
>
> Attachments: LUCENE-3829.patch
>
>
> Our DirectSource impls hold IndexInput(s) open against the dat/idx
> files, which we then seek + read when loading a specific document's
> value. But this is in no way protected against multiple threads
> I think...?
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