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From "Shawn Heisey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-4586) Increase default maxBooleanClauses
Date Wed, 05 Nov 2014 06:53:35 GMT

    [ https://issues.apache.org/jira/browse/SOLR-4586?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14197692#comment-14197692
] 

Shawn Heisey commented on SOLR-4586:
------------------------------------

Currently this limit is set in the SolrConfig constructor.  This will get executed multiple
times on a multicore installation.  That's probably not a performance issue, but it aggravates
my "unclean code" sense, so I was hoping to put it someplace that only gets executed once.
 A likely candidate is the CoreContainer constructor, but I'm not sure whether it would be
a good idea to introduce a dependency on a lucene class into solr code at that level.


> Increase default maxBooleanClauses
> ----------------------------------
>
>                 Key: SOLR-4586
>                 URL: https://issues.apache.org/jira/browse/SOLR-4586
>             Project: Solr
>          Issue Type: Improvement
>    Affects Versions: 4.2
>         Environment: 4.3-SNAPSHOT 1456767M - ncindex - 2013-03-15 13:11:50
>            Reporter: Shawn Heisey
>         Attachments: SOLR-4586.patch, SOLR-4586.patch, SOLR-4586.patch, SOLR-4586.patch,
SOLR-4586.patch, SOLR-4586_verify_maxClauses.patch
>
>
> In the #solr IRC channel, I mentioned the maxBooleanClauses limitation to someone asking
a question about queries.  Mark Miller told me that maxBooleanClauses no longer applies, that
the limitation was removed from Lucene sometime in the 3.x series.  The config still shows
up in the example even in the just-released 4.2.
> Checking through the source code, I found that the config option is parsed and the value
stored in objects, but does not actually seem to be used by anything.  I removed every trace
of it that I could find, and all tests still pass.



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