Re: PdataStreamIterator bug?

On Thu, 2006-05-25 at 13:29 -0300, Sidnei da Silva wrote:
> On Thu, May 25, 2006 at 06:15:01PM +0200, Roché Compaan wrote:
> | In my understanding of the ZODB, an object is only ghostified if it
> | hasn't been accessed in a long time and it isn't referenced by the cache
> | manager, or the transaction aborts. Since we are returning the data on
> | Pdata objects while accessing them, I don't understand how they can
> | suddenly be ghostified.
> | 
> | How can I re-create the behaviour you describe? Or what is the
> | circumstances under which this error becomes likely.
> 
>  - Upload a large file
>  - Restart Zope and download it via FTP or WebDAV as the very first
>    thing (to ensure the Pdata chain has not been loaded from ZODB).
> 
> Should be very easy to reproduce.

Yes, it was.

Now since this isn't a problem with FileSystemStorage, can I request
that 'data' returned by marshaller.marshall is not wrapped in a
PdataStreamIterator if data already implements the IStreamIterator
interface?

-- 
Roché Compaan
Upfront Systems                   http://www.upfrontsystems.co.za



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