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https://issues.apache.org/jira/browse/SOLR-8851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15218651#comment-15218651
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Marius Grama edited comment on SOLR-8851 at 3/30/16 8:55 PM:
-------------------------------------------------------------
Issue can be reproduced (quite often) on the _techproducts_ example collection
with the following query :
{noformat}
http://localhost:8983/solr/techproducts/select?q=*:*&wt=json&indent=true&facet=true&facet.query={!tag=q1}manufacturedate_dt:[2006-01-01T00:00:00Z%20TO%20NOW]&facet.query={!tag=q1}price:[0%20TO%20100]%20&timeAllowed=1
{noformat}
Moreover I notice now that also for the terms query :
{noformat}
http://localhost:8983/solr/techproducts/terms?terms.fl=name&timeAllowed=1
{noformat}
the _result_ element is delivered only when the query times out :
{noformat}
<response>
<lst name="responseHeader">
<bool name="partialResults">true</bool>
<int name="status">0</int>
<int name="QTime">8762</int>
</lst>
<lst name="terms">
<lst name="name"/>
</lst>
<result name="response" numFound="0" start="0"/>
</response>
{noformat}
I am further investigating whether SearchHandler lines 294-303 can be avoided :
{code}
SolrDocumentList r = (SolrDocumentList)
rb.rsp.getValues().get("response");
if(r == null)
r = new SolrDocumentList();
r.setNumFound(0);
rb.rsp.add("response", r);
if(rb.isDebug()) {
NamedList debug = new NamedList();
debug.add("explain", new NamedList());
rb.rsp.add("debug", debug);
}
{code}
was (Author: mariusneo):
Issue can be reproduced (quite often) on the _techproducts_ example collection
with the following query :
{noformat}
http://localhost:8983/solr/techproducts/select?q=*:*&wt=json&indent=true&facet=true&facet.query={!tag=q1}manufacturedate_dt:[2006-01-01T00:00:00Z%20TO%20NOW]&facet.query={!tag=q1}price:[0%20TO%20100]%20&timeAllowed=1
{noformat}
> 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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