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https://issues.apache.org/jira/browse/SOLR-4586?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13603762#comment-13603762
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Shawn Heisey commented on SOLR-4586:
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bq. I'd have to dig to be sure. I also thought I remember shawn saying in irc
that he confirmed that no code was reading this setting in solr anymore.
I was wrong about the value not actually being used anywhere. I think that can
be attributed to not grokking Lucene internals and having only a short history
with Java. I have since located the following bit of code that is removed from
SolrCore.java by my patch. At the time it didn't look like anything important.
{code}
BooleanQuery.setMaxClauseCount(boolean_query_max_clause_count);
{code}
> 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
> 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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