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https://issues.apache.org/jira/browse/LUCENE-1483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12657579#action_12657579
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Mark Miller commented on LUCENE-1483:
-------------------------------------
{quote}Hmmm... right. You mean if you pass in allowDocsOutOfOrder=true
(defaults to false).
I think this should not be a problem? (Though, I really don't fully understand
BooleanScorer!). Since we are running scoring per-segment, each segment might
collect its docIDs out of order, but all such docs are still within the current
segment. Then when we advance to the new segment, the collector can do
something if it needs to, and then collection proceeds again on the next
segment's docs, possibly out of order. Ie, the out-of-orderness never jumps
across a segment and then back again?{quote}
I was off base with my guess - its actually only using one reader for that test
(3 or 4 docs). Gotto be the HitCollector that the out of order scorer uses
needs to be tweaked. Last tests to fix.
> 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, 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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