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From "Paul Joseph Davis (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (COUCHDB-1270) Rewrite the view engine
Date Wed, 21 Sep 2011 00:04:11 GMT

     [ https://issues.apache.org/jira/browse/COUCHDB-1270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Paul Joseph Davis resolved COUCHDB-1270.
----------------------------------------

    Resolution: Fixed

Last series of commits have addressed all outstanding issues in this ticket. Any new bugs
should just be raised as new tickets.

> Rewrite the view engine
> -----------------------
>
>                 Key: COUCHDB-1270
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-1270
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: JavaScript View Server
>            Reporter: Paul Joseph Davis
>         Attachments: 0001-Minor-changes-for-new-indexing-engine.patch, 0002-Create-the-couch_index-application.patch,
0003-Create-the-couch_mrview-application.patch, 0004-Remove-the-old-view-engine.patch
>
>
> The view engine has been creaky and cluttered. As shown by GeoCouch, adding new indexers
basically involves copying the entire view engine and hacking the parts that are different.
In short, the opposite of good engineering.
> Over the last couple weeks I've refactored the view engine and reimplemented the map/reduce
view engine. These changes are 100% internal and no external behavior has changed. Performance
is just a tiny bit better than trunk. I did do some playing trying to improve view update
times and there are some dances we could do, but for the time being I wanted to keep the same
general architecture for updates so that the changes are minimal.

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