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From "Paul Joseph Davis (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (COUCHDB-640) Detect when a view is not valid for a database
Date Thu, 18 Feb 2010 20:06:28 GMT

     [ https://issues.apache.org/jira/browse/COUCHDB-640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Paul Joseph Davis resolved COUCHDB-640.
---------------------------------------

    Resolution: Fixed
      Assignee: Paul Joseph Davis

And closed

> Detect when a view is not valid for a database
> ----------------------------------------------
>
>                 Key: COUCHDB-640
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-640
>             Project: CouchDB
>          Issue Type: Bug
>          Components: JavaScript View Server
>    Affects Versions: 0.11
>            Reporter: Paul Joseph Davis
>            Assignee: Paul Joseph Davis
>         Attachments: couchdb-640-trunk-3.patch, couchdb-640-trunk.patch
>
>
> It was mentioned on IRC that if someone restores a database without restoring a view
then there's nothing that detects if the view is still valid. Ie, it may reflect an update_seq
that the restoration lost.
> In the check for kicking off a view update we should check if there is an incompatibility
between what's been calculated in the view vs what the db update sequence is at. The current
logic will just ignore and return the invalid view data (because of how stale=ok works which
is good).
> Should be an easy bug to fix if anyone's interested. The code should be pretty contained
to couch_view.erl and couch_view_group.erl

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