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https://issues.apache.org/jira/browse/LUCENE-5959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14137426#comment-14137426
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Michael McCandless commented on LUCENE-5959:
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Thanks, this is a nice fix! Maybe instead of using ArrayUtil.grow in that new
private method, we could just alloc to that exact size? (Since the Builder
knows it will only add exactly that many transitions...).
> Optimized memory management in Automaton.Builder.finish()
> ---------------------------------------------------------
>
> Key: LUCENE-5959
> URL: https://issues.apache.org/jira/browse/LUCENE-5959
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/other
> Affects Versions: 4.10
> Reporter: Markus Heiden
> Priority: Minor
> Attachments: finish.patch
>
>
> Reworked Automaton.Builder.finish() to not allocate memory stepwise. Added
> growTransitions(int numTransitions) to be able to resize the transistions
> array just once.
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