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Date: Wed, 4 Feb 2009 20:09:59 -0800 (PST)
From: "Paul Joseph Davis (JIRA)" <jira@apache.org>
To: dev@couchdb.apache.org
Subject: [jira] Updated: (COUCHDB-135) Offset regression between 0.8.0 and
 trunk
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     [ https://issues.apache.org/jira/browse/COUCHDB-135?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul Joseph Davis updated COUCHDB-135:
--------------------------------------

    Attachment: COUCHDB-135.patch

This should fix the offset calculation errors. Damien should look over it and Paul Carey should double check that it fixes his issues.

The way I understand things is that basically when the view was folding over the btree, pre-calculated values were not being properly remembered in the Reds variable that gets passed around. Specifically, when a kp node was passed over (ie, not examined by drop_nodes), any of the reductions associated with that node were being lost simply because they weren't added to the list.

Hopefully that makes sense to someone else too.

> Offset regression between 0.8.0 and trunk
> -----------------------------------------
>
>                 Key: COUCHDB-135
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-135
>             Project: CouchDB
>          Issue Type: Bug
>          Components: Database Core
>    Affects Versions: 0.9
>         Environment: OSX 10.5
>            Reporter: Paul Carey
>            Priority: Blocker
>             Fix For: 0.9
>
>         Attachments: COUCHDB-135.patch, view_offsets.js
>
>
> The offset returned for certain map queries differs between 0.8.0 and 0.9.0r702929.
> The attached test can be pasted into couch_tests.js. It passes in 0.8.0 and fails in 0.9.
> I believe the skip query param must be passed for this bug to be exhibited. 

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