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https://issues.apache.org/jira/browse/SOLR-4586?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13603823#comment-13603823
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Jack Krupansky commented on SOLR-4586:
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Several years ago when I looked at this, there was only a check in BooleanQuery
to see if the limit was exceeded, but otherwise Lucene was in no way dependent
on the value of that limit.
So, I recommend removing support for the limit from Lucene as well.
Actually, I would recommend deprecating the maxBooleanClauses feature of both
Lucene and Solr in 4.3, and removing the feature from trunk, 5.0.
> Remove maxBooleanClauses from Solr
> ----------------------------------
>
> 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
>
>
> 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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