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From "Doug Mittendorf (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SOLR-2604) Backport Join support to Solr 3.x
Date Fri, 17 Jun 2011 18:29:47 GMT
Backport Join support to Solr 3.x
---------------------------------

                 Key: SOLR-2604
                 URL: https://issues.apache.org/jira/browse/SOLR-2604
             Project: Solr
          Issue Type: New Feature
          Components: search
            Reporter: Doug Mittendorf
            Priority: Minor
             Fix For: 3.3


Join support was recently added to Solr trunk (4.0).  We have a need for this functionality,
but don't want to upgrade to trunk, so I spent some time back-porting the feature to work
with the 3.x APIs.  Not all of the optimizations that Yonik implemented have been ported since
the 3.x APIs don't allow the same low-level access to the index, but the basic functionality
is in place and seems to work well when joining between an index with 1.2M docs and another
with 300k docs.  

I still have yet to back-port the unit tests as those are heavily dependent on other 4.0 code,
but wanted to go ahead and post the initial code in case others can make use of it.

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