[jira] [Updated] (LUCENE-7283) Move SlowCompositeReaderWrapper to solr sources

["Michael McCandless (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-7283?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless updated LUCENE-7283:
---------------------------------------
    Attachment: LUCENE-7283.patch

Here's a rote patch, moving {{SlowCompositeReaderWrapper}} and also the {{uninverted}} package from {{org.apache.lucene...}} to {{org.apache.solr...}}.

> 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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