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https://issues.apache.org/jira/browse/SOLR-1477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12761014#action_12761014
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Jason Rutherglen commented on SOLR-1477:
----------------------------------------

Is there a lurking issue that prevents a chained distributed queries from 
working?  I setup a "proxy" core that queries local cores, which when called by 
another distributed request, fails with:

{code}
SEVERE: java.lang.NullPointerException
        at 
org.apache.solr.handler.component.ShardFieldSortedHitQueue$1.compare(ShardDoc.java:210)
        at 
org.apache.solr.handler.component.ShardFieldSortedHitQueue.lessThan(ShardDoc.java:134)
        at org.apache.lucene.util.PriorityQueue.upHeap(PriorityQueue.java:255)
        at org.apache.lucene.util.PriorityQueue.put(PriorityQueue.java:114)
        at 
org.apache.lucene.util.PriorityQueue.insertWithOverflow(PriorityQueue.java:156)
        at org.apache.lucene.util.PriorityQueue.insert(PriorityQueue.java:141)
        at 
org.apache.solr.handler.component.QueryComponent.mergeIds(QueryComponent.java:445)
        at 
org.apache.solr.handler.component.QueryComponent.handleResponses(QueryComponent.java:298)
        at 
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:290)
        at 
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131)
        at org.apache.solr.core.SolrCore.execute(SolrCore.java:1316)
{code}

> Search on local cores
> ---------------------
>
>                 Key: SOLR-1477
>                 URL: https://issues.apache.org/jira/browse/SOLR-1477
>             Project: Solr
>          Issue Type: Improvement
>    Affects Versions: 1.4
>            Reporter: Jason Rutherglen
>            Priority: Trivial
>             Fix For: 1.5
>
>         Attachments: SOLR-1477.patch, SOLR-1477.patch, SOLR-1477.patch
>
>
> Search on cores in the container, using distributed search.

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