ILYA created COUCHDB-3193:
-----------------------------

             Summary: fabric:open_revs returns multiple results when one of the 
shards has stem_interactive_updates=false
                 Key: COUCHDB-3193
                 URL: https://issues.apache.org/jira/browse/COUCHDB-3193
             Project: CouchDB
          Issue Type: Bug
            Reporter: ILYA


In the case when one of the shards has *stem_interactive_updates=false* the 
number of revisions in *Doc#doc.rev* could exceed *revs_limit*. In this case we 
treat responses from different shards as different. This is due to the fact 
that we include all revs into a key here 
https://github.com/apache/couchdb-fabric/blob/master/src/fabric_util.erl#L222. 
The fix is to truncate number of revisions returned from 
*couch_db:open_doc_revs* to *revs_limit*. 



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