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https://issues.apache.org/jira/browse/LUCENE-1483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12655710#action_12655710
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Michael McCandless commented on LUCENE-1483:
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bq. If you try using the default impl, and you change the parralellreaderreopen
test to use getSequintialReaders rather than getSubReaders
But you shouldn't change that test (it should continue to call
ParalellReader.getSubReaders).
bq. I dont see what we can do but release it deprecated with a note explaining.
Fair enough for 3.0 I think.
The problem is this doesn't create a the right sequence. Ie, if we mark
supportsDocBase as deprecated, then some ExternalHitCollector won't see the
deprecation warning (they have not overridden supportsDocBase), and so then we
can't remove it in 3.0 since their code will then silently break. I think the
only thing to do would be deprecate collect() in favor of another method. Or,
deprecate HitCollector entirely in favor of new class DocBaseHitCollector
(don't like that name). Sigh...
bq. Yeah, this one had the great feeling of the multiterm patch - rolled right
up into something nice. Goto love the Lucene API, flaws or not.
I love this kind :)
> 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
>
>
> FieldCache and Filters are forced down to a single segment reader, allowing
> for individual segment reloading on reopen.
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