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https://issues.apache.org/jira/browse/LUCENE-6388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14394430#comment-14394430
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Adrien Grand commented on LUCENE-6388:
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+1 too bad we can't expect ArrayList to always perform like a plain array :(
> Optimize SpanNearQuery
> ----------------------
>
> Key: LUCENE-6388
> URL: https://issues.apache.org/jira/browse/LUCENE-6388
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Robert Muir
> Attachments: LUCENE-6388.patch
>
>
> After the big spans overhaul in LUCENE-6308, we can speed up SpanNearQuery a
> little more:
> * SpanNearQuery defaults to collectPayloads=true, but this requires a slower
> implementation, for an uncommon case. Use the faster no-payloads impl if the
> field doesn't actually have any payloads.
> * Use a simple array of Spans rather than List in NearSpans classes. This is
> iterated over often in the logic.
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