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https://issues.apache.org/jira/browse/LUCENE-2249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12829790#action_12829790
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Simon Willnauer commented on LUCENE-2249:
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Current implementation of ParallelMultiSearcher uses a cached thread pool with
a core size of 0 and a keep alive time of 60 seconds. This will not leak any
threads but closing it is a good idea anyway. I will move this to minor and I
don't think its a bug either but good that you found it!
Thanks
> ParallelMultiSearcher should shut down thread pool on close
> -----------------------------------------------------------
>
> Key: LUCENE-2249
> URL: https://issues.apache.org/jira/browse/LUCENE-2249
> Project: Lucene - Java
> Issue Type: Bug
> Components: Search
> Affects Versions: 3.0
> Reporter: Martin Traverso
> Attachments: LUCENE-2249.patch
>
>
> ParallelMultiSearcher does not shut down its internal thread pool on close.
> As a result, programs that create multiple instances of this class over their
> lifetime end up "leaking" threads.
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