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https://issues.apache.org/jira/browse/SOLR-2955?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martijn van Groningen updated SOLR-2955:
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Attachment: SOLR-2955.patch
Thanks for reporting this issue Steffen!
I've attached a fix (4.0) for this issue. I also changes your test case a bit.
Basically I'm not asserting the response, because this isn't possible when
sorting by score in a sharded environment. It just runs the query and checks if
the query runs without errors.
> Distributed grouping throws IllegalStateException when querying with
> group.sort=score desc
> ------------------------------------------------------------------------------------------
>
> Key: SOLR-2955
> URL: https://issues.apache.org/jira/browse/SOLR-2955
> Project: Solr
> Issue Type: Bug
> Components: search
> Affects Versions: 3.6, 4.0
> Environment: Mac OS X 10.7.2
> Java version "1.6.0_29"
> Java(TM) SE Runtime Environment (build 1.6.0_29-b11-402-11M3527)
> Java HotSpot(TM) 64-Bit Server VM (build 20.4-b02-402, mixed mode)
> Reporter: Steffen Elberg Godskesen
> Assignee: Martijn van Groningen
> Labels: collapse, exception, grouping
> Attachments: SOLR-2955.patch, SOLR-2955.patch
>
>
> To reproduce:
> * Start example configuration from 3.6 or 4.0 distribution, and add example
> .xml documents to index
> * Query:
> http://localhost:8983/solr/select?q=*:*&sort=id%20asc&group=true&group.sort=score%20desc&group.field=manu_id_s&shards=localhost:8983/solr
> This will log
> {noformat}
> Dec 8, 2011 10:01:23 AM org.apache.solr.common.SolrException log
> SEVERE: java.lang.IllegalStateException: All required fields must be set
> at
> org.apache.solr.search.grouping.distributed.command.TopGroupsFieldCommand$Builder.build(TopGroupsFieldCommand.java:94)
> at
> org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:291)
> at
> org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:194)
> .
> .
> {noformat}
> For other (legal) values of group.sort or without the shards parameter, the
> query succeeds.
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