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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