[jira] [Created] (SOLR-7951) LBHttpSolrClient wraps ALL exceptions in "No live SolrServers available to handle this request" exception, even usage errors

["Elaine Cario (JIRA)" <ji...@apache.org>]

Elaine Cario created SOLR-7951:
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             Summary: LBHttpSolrClient wraps ALL exceptions in "No live SolrServers available to handle this request" exception, even usage errors
                 Key: SOLR-7951
                 URL: https://issues.apache.org/jira/browse/SOLR-7951
             Project: Solr
          Issue Type: Bug
          Components: SolrJ
    Affects Versions: 5.2.1
            Reporter: Elaine Cario
            Priority: Minor


We were experiencing many "No live SolrServers available to handle this request" exception, even though we saw no outages with any of our servers.  

It turned out the actual exceptions were related to the use of wildcards in span queries (and in some cases other invalid queries or usage-type issues). Traced it back to LBHttpSolrClient which was wrapping all exceptions, even plain SolrExceptions, in that outer exception.  

Instead, wrapping in the out exception should be reserved for true communication issues in SolrCloud, and usage exceptions should be thrown as is.



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