Can we therefore make that no removal of deleted column is permitted if there 
is no implementation of shadow tables ?

Tim

From: Joe Gordon [mailto:[email protected]]
Sent: 11 March 2014 20:57
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [all][db][performance] Proposal: Get rid of soft 
deletion (step by step)



On Tue, Mar 11, 2014 at 12:43 PM, Tim Bell 
<[email protected]<mailto:[email protected]>> wrote:

Typical cases are user error where someone accidentally deletes an item from a 
tenant. The image guys have a good structure where images become unavailable 
and are recoverable for a certain period of time. A regular periodic task 
cleans up deleted items after a configurable number of seconds to avoid 
constant database growth.

My preference would be to follow this model universally (an archive table is a 
nice way to do it without disturbing production).

That was the goal of the shadow table, if it doesn't support that now then its 
a bug.


Tim


> On Tue, Mar 11, 2014, Mike Wilson 
> <[email protected]<mailto:[email protected]>> wrote:
> > Undeleting things is an important use case in my opinion. We do this
> > in our environment on a regular basis. In that light I'm not sure that
> > it would be appropriate just to log the deletion and git rid of the
> > row. I would like to see it go to an archival table where it is easily 
> > restored.
>
> I'm curious, what are you undeleting and why?
>
> JE
>
>
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