Peter Wolanin created SOLR-4197:
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             Summary: EDismax allows end users to use local params in q= to 
override global params
                 Key: SOLR-4197
                 URL: https://issues.apache.org/jira/browse/SOLR-4197
             Project: Solr
          Issue Type: Bug
    Affects Versions: 4.0, 3.6, 3.5
            Reporter: Peter Wolanin



Edismax is advertised as suitable to be used to "process advanced user input 
directly".  Thus, it would seem reasonable to have an application directly pass 
user input in the q= parameter to a back-end Solr server.

However, it seems that users can enter local params at the start of q= which 
override the global params that the application (e.g. website) may have set on 
the query string.  Confirmed with Erik Hatcher that this is somewhat unexpected 
behavior (though one could argue it's an expected feature of any query parser)

Proposed fix - add a parameter (e.g. that can be used as an invariant) that can 
be passed to inhibit Solr from using local params from the q= parameter.

This is somewhat related to SOLR-1687


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