Rick Kellogg created KNOX-1066:
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             Summary: Update Operations via SOLR to Knox Fail 
                 Key: KNOX-1066
                 URL: https://issues.apache.org/jira/browse/KNOX-1066
             Project: Apache Knox
          Issue Type: Bug
          Components: Server
    Affects Versions: 0.12.0, 0.13.0
            Reporter: Rick Kellogg


When using the Java SOLRJ HttpSolrClient, any operation that relies upon a POST 
HTTP operation fails authentication when proxied via Knox.  This is because the 
SOLRJ API only supports traditional challenge/response basic authentication.  
For any update style operation the SOLRJ client refuses to retry the operation 
as it might lead to duplicate data, etc.  If this were a GET operation, it 
would retry the operation and include the appropriate authentication header.

Therefore preemptive authentication must be used for updates to succeed.  
Unfortunately, the Apache HttpClient construction is hidden from the client in 
the form of the HttpSolrClient.Builder class.





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