[sync] Full sync after update to Horde_ActiveSync 2.9.0

[lst_hoe02 at kwsoft.de]

Zitat von Michael J Rubinsky <mrubinsk at horde.org>:

> Zitat von lst_hoe02 at kwsoft.de:
>>
>> on the testserver we have done the update to ActiveSync 2.9.0 with  
>> stopping Apache do the pear upgrade, do horde-clear-cache and  
>> horde-db-migrate. After this the iPhone 4S connected with  
>> ActiveSync does a full resync for the mailbox. Is this expected  
>> behaviour or can this be prevented somehow?
>
> This is due to a change in the format of some of the cached data  
> that is saved for each collection. I've added code to attempt to  
> load the previous format before throwing the error to save the  
> repairing. This *should* prevent the resync.

At least for the iPhone it looks like it does not work reliable, so  
one have to be aware that the devices will re-download the whole  
mailbox after update...

>> Another oddity is the following in the sync log
>>
>> "ERR: Cache version change"
>>
>> Not sure what is...
>
> This is an expected message when the cached data format changes.

Ok, so why the data *format* of the cache changes? This is not about  
*content* of the cache, no? It scares me because it is listed as "ERR"  
(error).

Thanks

Andreas