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From "Robert Parker (JIRA)" <>
Subject [jira] [Commented] (SOLR-4586) Increase default maxBooleanClauses
Date Mon, 03 Nov 2014 21:21:36 GMT


Robert Parker commented on SOLR-4586:

Under Solr 4.10.2 in solrcloud configuration, if I upload a change to solrconfig.xml to zookeeper
that raises maxBooleanClauses from 1024 to 2048 and then reload the collection, the cores
do not recongnize a new value for maxBooleanClauses unlike other changes to schema.xml and
solrconfig.xml.  I have to bounce Solr on each node before queries will honor the new value
for maxBooleanClauses.  This seems like unintentional behavior.  I should be able to make
any change to schema.xml and solrconfig.xml, then upload those to zookeeper and have each
node in the cluster instantly honor all new values after a core/collection reload.

> Increase default maxBooleanClauses
> ----------------------------------
>                 Key: SOLR-4586
>                 URL:
>             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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