Changing maxBooleanClauses 

The maxBooleanClauses parameter defines the maximum number of clauses in a boolean query. If you change the maxBooleanClauses parameter in solrconfig.xml, restart the nodes to make the change effective.

The maxBooleanClauses parameter defines the maximum number of clauses in a boolean query. An exception is thrown if this value is exceeded. If you change the maxBooleanClauses parameter in solrconfig.xml, restart the nodes to make the change effective. Reloading the Solr cores does not make this change effective.

Note: Limitations and known Apache Solr issues apply to DSE Search queries, including the 1024 maxBoolean clause limit in SOLR-4586.