[Zope-dev] Bulletproof ZCatalog proposal

[Toby Dickenson]

On Thu, 31 May 2001 10:03:31 -0400 (EDT), Shane Hathaway
<shane@digicool.com> wrote:

>On Thu, 31 May 2001, Erik Enge wrote:
>
>> On Wed, 30 May 2001, Shane Hathaway wrote:
>>
>> > I have written a proposal.
>>
>> So, if I understand correctly, when this is implemented, will the =
ZCatalog
>> always resolve conflicts and never raise ConflictErrors?  If there are=
 no
>> ConflictErrors in the main object system?
>>
>> I think I'm missing the point here.
>
>How did you miss the point?  That's exactly the point! :-)
>
>Right now ZCatalog randomly generates ConflictErrors even if there are =
no
>conflicts in the data being indexed.  It's quite rare, however, and
>there's machinery that retries the entire transaction up to three times
>when it happens.=20

If the current mechanism is reliable, and efficient (given that
conflict/retries are rare) then I dont understand the motivation....

> But I want it to be more reliable, especially so that
>ZCatalog can be used in ZODB applications outside Zope.

Is it because other non-Zope applications might not be so proficient
at performing retries?


Toby Dickenson
tdickenson@geminidataloggers.com