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https://issues.apache.org/jira/browse/COUCHDB-530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12766208#action_12766208
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Miki Tebeka commented on COUCHDB-530:
-------------------------------------

Yes, there are other views in the same design who do use reduce. I'm attaching 
the design.
Come to think of it, the problem started when trying to access another view in 
this design, can't remember exactly which.

> reduce_overflow_error on a view without reduce
> ----------------------------------------------
>
>                 Key: COUCHDB-530
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-530
>             Project: CouchDB
>          Issue Type: Bug
>          Components: Database Core
>    Affects Versions: 0.10
>         Environment: Ubuntu 9.04
>            Reporter: Miki Tebeka
>
> This view used to work on 0.9.1, I've installed 0.10.0 and migrated some data.
> When running the view I get the following error:
>     (env2.5)[11:47] admin $curl 
> 'localhost:5985/stats/_design/stats/_view/active'
>     {"error":"reduce_overflow_error","reason":"Reduce output must shrink more 
> rapidly: Current output: 
> '[[25,17,117,25,93,17,13,13,12,24,14,13,10,15,20,12,14,14,17,36,38,83,18,11,1058,12,10,29,13,12,10,14'...
>  (first 100 of 1395 bytes)"}
> What's interesting is that this view does not have a reduce function. The map 
> function is:
>     function (doc) {
>         if (doc.Type == 'max active') {
>             emit(doc.Time, doc.Count);
>         }
>     }
> A typical document looks like:
>     
> {"_id":"02c94bea2900686a01ebbf8829aabfa2","_rev":"1-cccb3b5eb382bf609bd41feb85af063b","Count":2,"Type":"max
>  active","Time":1254362400.0}

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