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https://issues.apache.org/jira/browse/SOLR-6039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13990916#comment-13990916
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ASF subversion and git services commented on SOLR-6039:
-------------------------------------------------------

Commit 1592821 from [email protected] in branch 'dev/branches/lucene_solr_4_8'
[ https://svn.apache.org/r1592821 ]

Merge back several "low hanging" bug fixes into the 4.8 branch...
SOLR-6029: r1590867
SOLR-6030: r1591555
SOLR-6037: r1591800
SOLR-6023: r1592195
SOLR-5090: r1592591
SOLR-6039: r1592605
SOLR-5993: r1588415
SOLR-5904: r1587702

> debug=track causes debug=query info to be suppressed when no results found
> --------------------------------------------------------------------------
>
>                 Key: SOLR-6039
>                 URL: https://issues.apache.org/jira/browse/SOLR-6039
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 4.7
>            Reporter: Hoss Man
>            Assignee: Tomás Fernández Löbbe
>             Fix For: 4.9, 5.0
>
>         Attachments: SOLR-6039.patch, SOLR-6039.patch, SOLR-6039.patch, 
> SOLR-6039.patch
>
>
> Shamik Bandopadhyay noted on the mailing list that debugQuery=true wasn't 
> returning info about how the query was being parsed in SolrCloud.
> Steps to reproduce...
> * startup a simple 2 shard solr cluster using the example configs
> * Load this URL:
> ** http://localhost:8983/solr/select?q=Foo&debug=query
> ** note that the debug=query causes a debug block including "parsedquery" 
> showing "title:foo"
> * Load either of these URLs:
> ** http://localhost:8983/solr/select?q=Foo&debug=query&debug=track
> ** http://localhost:8983/solr/select?q=Foo&debugQuery=true (legacy short hand 
> option for enabling all debug options)
> ** Note that the debug block exists, but *only* includes the distributed 
> "track" options - the query parsing debugging info is not available
> * index the sample data (java -jar post.jar *.xml)
> * Load either of these URLs:
> ** http://localhost:8983/solr/select?q=Solr&debugQuery=true&fl=id
> ** http://localhost:8983/solr/select?q=Solr&debug=query&debug=track&fl=id
> ** Note that now we have at least one matching doc, and the parsedquery info 
> is included in the debug block along with the tracking info
> * Load either of these URLs:
> ** http://localhost:8983/solr/select?q=Solr&debug=query&debug=track&rows=0
> ** http://localhost:8983/solr/select?q=Solr&debug=query&debug=track&rows=0
> ** Note: even though we have a matching doc, since rows=0 prevents it from 
> being returned, the parsedquery debug info again no longer works - just the 
> track debug info
> ----
> The work around, for people who want don't care about the newer "debug 
> tracking" and what the same debug information as pre-4.7, is to enumerate the 
> debug options (ie: {{debug=query&debug=timing&debug=results}}) instead of 
> relying on the shorthand: {{debugQuery=true}}



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