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https://issues.apache.org/jira/browse/SOLR-14376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17077546#comment-17077546
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ASF subversion and git services commented on SOLR-14376:
--------------------------------------------------------

Commit 6905405d3fc34d96d68e3ec8705085d8e920a1cd in lucene-solr's branch 
refs/heads/branch_8x from David Smiley
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=6905405 ]

SOLR-14376: optimize SolrIndexSearcher.getDocSet when matches everything
* getProcessedFilter now returns null filter if it's all docs more reliably
* getProcessedFilter now documented clearly as an internal method
* getDocSet detects all-docs and exits early with getLiveDocs
* small refactoring to getDocSetBits/makeDocSetBits
Closes #1399

(cherry picked from commit 013898dec51c87c2cf9fb4d119c51e56354e23c6)


> Optimize SolrIndexSearcher.getDocSet and getProcessedFilter for empty fq
> ------------------------------------------------------------------------
>
>                 Key: SOLR-14376
>                 URL: https://issues.apache.org/jira/browse/SOLR-14376
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: search
>            Reporter: David Smiley
>            Assignee: David Smiley
>            Priority: Major
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> If either SolrIndexSearcher.getDocSet or getProcessedFilter are called with 
> an null/empty query list, we should be able to short-circuit this with a 
> getLiveDocSet response.  Today getDocSet builds up a new DocSet, bit by bit 
> :-/



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