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From "Paul Joseph Davis (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (COUCHDB-1362) couchjs doesn't clean out global namespace between views calls
Date Tue, 13 Dec 2011 02:15:31 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-1362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13168065#comment-13168065
] 

Paul Joseph Davis commented on COUCHDB-1362:
--------------------------------------------

Except sealing has issues in some versions. And I'm not sure if that even gets us out of crazy
town. We already use sub-contexts that are sealed if possible and I'm not entirely certain
on the interplay there. I've also heard from other SpiderMonkey embeders that do things like
"scan k/v pairs on global, run js, delete unknown keys and reset values" which sounds like
a best effort but not full proof way of dealing with this.

Basically, there's a lot to this and "don't do that" has served us well enough for long enough
that unless someone wants to take on the task of making these things work for our supported
versions of SpiderMonkey I'd be a bit hesitant on allocating cycles to it right now.
                
> couchjs doesn't clean out global namespace between views calls
> --------------------------------------------------------------
>
>                 Key: COUCHDB-1362
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-1362
>             Project: CouchDB
>          Issue Type: Bug
>    Affects Versions: 1.1.1
>         Environment: Linux
>            Reporter: jay groven
>            Priority: Minor
>
> Sometimes a view can access the functions that were defined in a previous view.  This
can lead a developer to think that function sharing has been implemented, but it's not reliable
behaviour.  It would be better if the global namespace were cleared between map/reduce runs
so that it's clear that there is no reliable way to share functions between views.

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