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https://issues.apache.org/jira/browse/LUCENE-7283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15300144#comment-15300144
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ASF subversion and git services commented on LUCENE-7283:
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Commit 50572bf0b3ebcd4cfba03c1da3459da90106db68 in lucene-solr's branch
refs/heads/branch_6x from Mike McCandless
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=50572bf ]
LUCENE-7283: deprecate SlowCompositeReaderWrapper and uninverting package
> Move SlowCompositeReaderWrapper 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
> 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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