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https://issues.apache.org/jira/browse/LUCENE-1483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12655839#action_12655839
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Michael McCandless commented on LUCENE-1483:
--------------------------------------------
{quote}
> If we do that, I don't think we can do our check to use base or not by
> checking for HitCollector right?
{quote}
Ahh right, so if a user outside creates a TopDocCollector & passes it in, we
can't tell that it can handle setBase natively. Or we could test & catch the
UOE (since HitCollector is deprecated, using an exception here will go away in
3.0).
> Change IndexSearcher to use MultiSearcher semantics for multiple subreaders
> ---------------------------------------------------------------------------
>
> Key: LUCENE-1483
> URL: https://issues.apache.org/jira/browse/LUCENE-1483
> Project: Lucene - Java
> Issue Type: Improvement
> Affects Versions: 2.9
> Reporter: Mark Miller
> Priority: Minor
> Attachments: LUCENE-1483.patch, LUCENE-1483.patch, LUCENE-1483.patch,
> LUCENE-1483.patch, LUCENE-1483.patch, LUCENE-1483.patch, LUCENE-1483.patch,
> LUCENE-1483.patch, LUCENE-1483.patch
>
>
> FieldCache and Filters are forced down to a single segment reader, allowing
> for individual segment reloading on reopen.
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