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From "Elaine Cario (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SOLR-7951) LBHttpSolrClient wraps ALL exceptions in "No live SolrServers available to handle this request" exception, even usage errors
Date Fri, 21 Aug 2015 15:33:46 GMT

     [ https://issues.apache.org/jira/browse/SOLR-7951?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Elaine Cario updated SOLR-7951:
-------------------------------
    Attachment: SOLR-7951-4.x.patch

Patch applies to LBHttpSolrServer in 4.x line.  Similar change can be made to 5.x LBHttpSolrClient

> 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
>         Attachments: SOLR-7951-4.x.patch, SOLR-7951.patch
>
>
> 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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