[jira] [Created] (SOLR-6039) debug=track causes debug=query info to be suprsedd when no results found

["Hoss Man (JIRA)" <ji...@apache.org>]

Hoss Man created SOLR-6039:
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             Summary: debug=track causes debug=query info to be suprsedd 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


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

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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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