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https://issues.apache.org/jira/browse/LUCENE-2504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12881225#action_12881225
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Yonik Seeley commented on LUCENE-2504:
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Hmmm, the way FieldComparator / FieldComparatorSource work now, it doesn't seem
possible to specialize based on the underlying native array type. In order to
do this, a new FieldComparator would need to be returned for each segment.
One possibility: modify setNextReader to return a FieldComparator?
> sorting performance regression
> ------------------------------
>
> Key: LUCENE-2504
> URL: https://issues.apache.org/jira/browse/LUCENE-2504
> Project: Lucene - Java
> Issue Type: Bug
> Affects Versions: 4.0
> Reporter: Yonik Seeley
> Fix For: 4.0
>
>
> sorting can be much slower on trunk than branch_3x
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