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RE: Snapshots mysteriously vanishing?
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RE: Snapshots mysteriously vanishing?


  • Subject: RE: Snapshots mysteriously vanishing?
  • From: "Brook, James" <email@hidden>
  • Date: Thu, 25 Mar 2010 21:25:48 +0100
  • Acceptlanguage: en-US
  • Thread-topic: Snapshots mysteriously vanishing?

Mike,

That sounds all too familiar to me. We are experiencing errors just like that. We have a feature that creates nested editing contexts several levels deep and fetches EOs all the way down to the bottom. Do you know of a workaround, patch or some way to recover from the bug you mention? I seem to remember a similar bug years ago in the days when EOF kept strong references. We are using Wonder.

Sorry for selfishly jumping in. Disappearing snapshots are causing us lots of pain because whole instances of our application become useless.

--
James
________________________________________
From: webobjects-dev-bounces+jbrook=email@hidden [webobjects-dev-bounces+jbrook=email@hidden] On Behalf Of Mike Schrag [email@hidden]
Sent: 25 March 2010 20:20
To: Marc Guenther
Cc: email@hidden
Subject: Re: Snapshots mysteriously vanishing?

>> by any chance was this an EO in a parent editing context that also existed in a child editingcontext?
>
> I don't think so, but I'm not sure. That particular EO could have been in all differents ECs at the time, as it's entity is used all over the place.
>
> Do you have anything specific in mind?
yeah, there's a bug with refcounting of eo's in child ec's if the parent ec copy of the EO gets garbage collected ... the result of this bug is disappearing snapshots. this specifically applies to eo's fetched into a child that were already fetched into the parent, though, not to peer ec's.

ms
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  • Follow-Ups:
    • Re: Snapshots mysteriously vanishing?
      • From: Mike Schrag <email@hidden>
References: 
 >Snapshots mysteriously vanishing? (From: Marc Guenther <email@hidden>)
 >Re: Snapshots mysteriously vanishing? (From: Mike Schrag <email@hidden>)
 >Re: Snapshots mysteriously vanishing? (From: Marc Guenther <email@hidden>)
 >Re: Snapshots mysteriously vanishing? (From: Mike Schrag <email@hidden>)

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