Pascal Chollet created SOLR-8851:
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Summary: ClassCastException in SearchHandler
Key: SOLR-8851
URL: https://issues.apache.org/jira/browse/SOLR-8851
Project: Solr
Issue Type: Bug
Affects Versions: 5.4.1
Reporter: Pascal Chollet
When there is a query timeout in non-distrub mode, {{SearchHandler}} is
throwing a {{ClassCastException}}:
{code}java.lang.ClassCastException: org.apache.solr.response.ResultContext
cannot be cast to org.apache.solr.common.SolrDocumentList
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:293)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:156)
...{code}
The problem can be reproduced if any component running after {{QueryComponent}}
times out - in our case it is {{FacetComponent}} which throws a
{{ExitingReaderException}}.
{{SearchHandler:293}} expects a {{SolrDocumentList}} in {{rsp.response}}, but
{{QueryComponent}} did add a {{ResultContext}} instead.
It looks like this is not a problem, if the {{QueryComponent}} itself is timing
out, as rsp.response is null in that case. It's only a problem if a component
after {{QueryComponent}} is timing out.
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