[jira] Commented: (COUCHDB-801) Add 'ForceReReduce=true' option to views to ensure that reduce function is called

["Sebastian Cohnen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/COUCHDB-801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12879273#action_12879273 ] 

Sebastian Cohnen commented on COUCHDB-801:
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I don't feel like this should go into couchdb itself, since this is only relevant for testing purposes. It also does not always make sense to "force" a rereduce for testing e.g. if one key only has one value. you would have to make sure, that you have enough documents too, in such cases.

For testing your map/reduce-funs, it is much easier and more flexible when you use the js cli command and call your map and reduce funs in a unit-test fashion. If you live in the ruby world you could have a look at couch_potato, which has basic support for unit-testing map/reduce funs.

> Add 'ForceReReduce=true' option to views to ensure that reduce function is called
> ---------------------------------------------------------------------------------
>
>                 Key: COUCHDB-801
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-801
>             Project: CouchDB
>          Issue Type: Improvement
>         Environment: Any
>            Reporter: Bryan White
>            Priority: Minor
>
> AFAIK there is no way to force a Map Reduce with rereduce=true to happen, other than creating an arbitrary large number of documents. So any bugs in handling reduce calls with rereduce=true might not be discovered at development time.
> I propose something like a 'ForceReReduce=true' option which will call Reduce with rereduce=true (either once overall, or maybe once for each document) in order to shake any lurking bugs out of the tree. 
> If there *is* such a feature, I apologise; I've looked but can't find it.

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