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https://issues.apache.org/jira/browse/SOLR-626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12613118#action_12613118
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ian connor commented on SOLR-626:
---------------------------------
A possible work around when you sort on a given field, is to add a secondary
sort of "score" and then it works fine. It will return the score as well as
sorting in the order you want.
> docs.getMaxScore is null inside writeSolrDocumentList when sorting using
> shards and returning output as JSON
> ------------------------------------------------------------------------------------------------------------
>
> Key: SOLR-626
> URL: https://issues.apache.org/jira/browse/SOLR-626
> Project: Solr
> Issue Type: Bug
> Components: search
> Affects Versions: 1.3
> Environment: Tested on both Linux and OSX running latest 1.3 build
> Reporter: ian connor
> Fix For: 1.3
>
>
> When issuing a query to many shards or even just one:
> http://localhost:8983/solr/select?sort=some_date+desc&indent=on&hl.fl=&q=solr&rows=10&fl=*%2Cscore&qt=standard&wt=ruby&explainOther=&hl.fl=&shards=localhost:8983/solr
> It returns:
> java.lang.NullPointerException
> at
> org.apache.solr.request.JSONWriter.writeSolrDocumentList(JSONResponseWriter.java:528)
> at
> org.apache.solr.request.TextResponseWriter.writeVal(TextResponseWriter.java:147)
> 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.RubyResponseWriter.write(RubyResponseWriter.java:34)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:297)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
> I tried to swap out the call to writeLong from:
> writeFloat(null,docs.getMaxScore());
> to:
> writeFloat(null,0);
> and it then works without bringing back the max_score. However, I am not sure
> why the score is coming back null here. If you return the results in XML it
> also works so the problem seems limited to JSON and Ruby.
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