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From "Guido (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SOLR-6167) SolrDocumentList cannot be cast to ResultContext on Solr 4.8.0
Date Fri, 13 Jun 2014 21:53:02 GMT
Guido created SOLR-6167:
---------------------------

             Summary: SolrDocumentList cannot be cast to ResultContext on Solr 4.8.0
                 Key: SOLR-6167
                 URL: https://issues.apache.org/jira/browse/SOLR-6167
             Project: Solr
          Issue Type: Bug
          Components: clients - php
    Affects Versions: 4.8
         Environment: Linux
            Reporter: Guido
             Fix For: 4.8


Hello,

I have a running instance of Solr 4.2.1 (I will refer to it as 'instance A') and I am trying
to pass to Solr 4.8.0. For this purpose, I created a copy of the machine which hosts 'instance
A' (I will refer to the copy as 'instance B') and, on this new machine, I have installed Solr
4.8.0 and I have created a collection with 4 shards. Then, on the new machine, I have iterated
over a copy of the index built on instance A and I have re-indexed all the documents and inserted
them inside the new collection of Solr 4.8.0. I have completed this process, the two index
seem to contain the same documents and I am successfully able to query properly both the indexes.

When I try to run the following query on 'instance A':

http://instance_A_ip:23332/solr/myindex/query?q=id%3Amyid&fl=html&wt=html

I get a well formatted html response. Unfortunately, when I try the same query on the 'instance
B'

http://instance_A_ip:23332/solr/mycollection/query?q=id%3Amyid&fl=html&wt=html

I receive the following error code:

HTTP Status 500 - {msg=org.apache.solr.common.SolrDocumentList cannot be cast to org.apache.solr.response.ResultContext,trace=java.lang.ClassCastException:
org.apache.solr.common.SolrDocumentList cannot be cast to org.apache.solr.response.ResultContext
at my.library.solr.HtmlResponseWriter.write(HtmlResponseWriter.java:33) at org.apache.solr.servlet.SolrDispatchFilter.writeResponse(SolrDispatchFilter.java:762)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:431) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:207)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:744)
,code=500}

This is the error that I grep from the solr log file:

 org.apache.solr.common.SolrException; null:java.lang.ClassCastException: org.apache.solr.common.SolrDocumentList
cannot be cast to org.apache.solr.response.ResultContext
        at my.library.solr.HtmlResponseWriter.write(HtmlResponseWriter.java:33)
        at org.apache.solr.servlet.SolrDispatchFilter.writeResponse(SolrDispatchFilter.java:762)
        at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:431)
        at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:207)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
        at java.lang.Thread.run(Thread.java:744)
		
This is the error that I grep from the tomcat log file:		
		
org.apache.solr.servlet.SolrDispatchFilter  – null:java.lang.ClassCastException: org.apache.solr.common.SolrDocumentList
cannot be cast to org.apache.solr.response.ResultContext
        at my.library.solr.HtmlResponseWriter.write(HtmlResponseWriter.java:33)
        at org.apache.solr.servlet.SolrDispatchFilter.writeResponse(SolrDispatchFilter.java:762)
        at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:431)
        at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:207)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
        at java.lang.Thread.run(Thread.java:744)


The differences between instance A and instance B are:
- the Solr versions
- on instance A, I am using a single Solr instance (without Solr Cloud)
- on instance B, I am using Solr Cloud and I created a collection with 4 shards
- I removed a couple of not necessary fields inside the schema of the instance B when I created
the collection (before to load documents) and I loaded documents according to the new schema
(I have not loaded the removed fields)

The instance B is installed on a clone of the machine on which instance A is running, so the
software stack as well as the hardware are the same. On both the machines I have installed
Apache Tomcat 6.0.37.

If I try to run the same query on instance B by specifying wt=csv I obtain the right field
value, but unfortunately it's not a well formatted html reply.

Inside the schema on instance A, these are the information related to the html field:

Field: html
Flags:    Stored
Properties  yes	
Schema      yes
Field-Type: org.apache.solr.schema.StrField
Index Analyzer: org.apache.solr.schema.FieldType$DefaultAnalyzer
Query Analyzer: org.apache.solr.schema.FieldType$DefaultAnalyzer

Inside the schema on instance B, these are the information related to the html field:

Field: html
Flags:    Stored  Sort Missing Last
Properties  yes     yes	
Schema      yes     yes
Field-Type: org.apache.solr.schema.StrField
Index Analyzer: org.apache.solr.schema.FieldType$DefaultAnalyzer
Query Analyzer: org.apache.solr.schema.FieldType$DefaultAnalyzer

Do you know if there is a way to execute on a Solr cloud collection with Solr 4.8.0 this same
query that I am successfully able to execute on my single instance of Solr 4.2.1?

I would really appreciate every suggestion about it. Please, let me know if you need any further
information.

Thank you.

Best Regards,

Guido



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