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https://issues.apache.org/jira/browse/SOLR-1048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12967035#action_12967035
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Jon Bodner commented on SOLR-1048:
----------------------------------
The issue is still present in the 1.4.1 code base for Solr. I found the source
of the problem. In the ids stage for sharding, the score is not calculated (it
was returned in the previous stage), so the DocSlice's scores float array is
still null. XMLWriter and BinaryResponseWriter include lines like:
includeScore = includeScore && ids.hasScores();
but JSONWriter does not.
This issue is only going to present itself when you are debugging, since I
think the ids parameter is only used for sharding, and Solr uses the javabin
wire protocol instead of json.
> Ids parameter and fl=score throws an exception for wt=json
> ----------------------------------------------------------
>
> Key: SOLR-1048
> URL: https://issues.apache.org/jira/browse/SOLR-1048
> Project: Solr
> Issue Type: Bug
> Components: search
> Affects Versions: 1.3
> Reporter: Laurent Chavet
>
> http://yourHost:8080/solr/select/?ids=YourDocId&version=2.2&start=0&rows=10&indent=on&fl=score,id&q=%2B*:*
> shows that when using ids= the score for docs is null; when using wt=json:
> http://yourHost:8080/solr/select/?ids=YourDocId&version=2.2&start=0&rows=10&indent=on&fl=score,id&q=%2B*:*&wt=json
> that throws a NullPointerException:
> HTTP Status 500 - null java.lang.NullPointerException at
> org.apache.solr.search.DocSlice$1.score(DocSlice.java:120) at
> org.apache.solr.request.JSONWriter.writeDocList(JSONResponseWriter.java:490)
> at
> org.apache.solr.request.TextResponseWriter.writeVal(TextResponseWriter.java:140)
> at
> org.apache.solr.request.JSONWriter.writeNamedListAsMapWithDups(JSONResponseWriter.java:175)
> at
> org.apache.solr.request.JSONWriter.writeNamedList(JSONResponseWriter.java:288)
> at
> org.apache.solr.request.JSONWriter.writeResponse(JSONResponseWriter.java:88)
> at
> org.apache.solr.request.JSONResponseWriter.write(JSONResponseWriter.java:49)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:257)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
> at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:847)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
> at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
> at java.lang.Thread.run(Thread.java:619)
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