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https://issues.apache.org/jira/browse/LUCENE-1483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12655703#action_12655703
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Michael McCandless commented on LUCENE-1483:
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Looks good! Do we really need IndexReader.supportsSequentialReaders? Because
the default impl (return length 1 array of itself) seems sufficient?
Also, I don't think ParallelReader needs to throw UnsupportedOperationException
in that method -- it can fallback to the default?
It would be nice to somehow deprecate "supportsDocBase" so that all outside
HitCollectors would need to support it on upgrading to 3.0, but, I'm not sure
how to cleanly do that. (Ie I'd rather not have that method continue to exist
in 3.0).
It's a delightfully small patch now!
> 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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