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https://issues.apache.org/jira/browse/LUCENE-7283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15304307#comment-15304307
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ASF subversion and git services commented on LUCENE-7283:
---------------------------------------------------------
Commit 5525f429288cf8480ae7b6dc1438918e809a242c in lucene-solr's branch
refs/heads/branch_6x from [[email protected]]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=5525f42 ]
SOLR-9160: Sync 6x and 7.0 move of UninvertingReader,
SlowCompositeReaderWrapper for Solr (LUCENE-7283)
> Move SlowCompositeReaderWrapper and uninverting package to solr sources
> -----------------------------------------------------------------------
>
> Key: LUCENE-7283
> URL: https://issues.apache.org/jira/browse/LUCENE-7283
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: 6.1, master (7.0)
>
> Attachments: LUCENE-7283.patch
>
>
> Spinoff from LUCENE-6766, where we fixed index-time sorting to have first
> class support in Lucene's ore, and no longer use
> {{SlowCompositeReaderWrapper}}.
> This is a dangerous, long living class, that tries to pretend a set of N
> segments is actually just a single segment. It's a leaky abstraction, has
> poor performance, and puts undue pressure on the APIs of new Lucene features
> to try to keep up this illusion.
> With LUCENE-6766, finally all usage of this class (except for
> {{UninvertedReader}} tests, which should maybe also move out?) has been
> removed from Lucene, so I think we should move it to Solr. This may also
> lead to a solution for LUCENE-7086 since e.g. the class could tap into solr's
> schema to "know" how to handle points fields properly.
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