Sync_client errors upgrade from 2.3.16 to 2.4.5

[Stephen G Carr]

Dear Bron

After about 3 hours the messages stopped.

I notice a massive change in db_stat -c when comparing 2.3.16 to 2.4.5 
the earlier version seemed to hold locks for ages for example the number 
of current would be about 40+ depending on concurrent connections  now 
it is Zero

Thanks to ALL
Stephen Carr


Bron Gondwana wrote:
> On Sat, Dec 04, 2010 at 01:59:33PM +1030, Stephen Carr wrote:
>   
>> Dear All
>>
>> I had a problem last week upgrading 2.3.16 to 2.4.4 due to a CRC bug.
>>
>> I have now updated from 2.3.16 to 2.4.5 with no major problems but I am 
>> getting a massive number of records of the type below - I will have to 
>> monitor the log size.
>>
>> The sync_client and replica have the same time ( actually the replica 
>> gets it date off the sync_client every 2 minutes).
>>
>> Also I get a very few like this
>>
>> Dec  4 13:58:12 brooks sync_client[17782]: inefficient replication (17 > 
>> 15) user.user1
>> Dec  4 13:58:14 brooks sync_client[17782]: inefficient replication (12 > 
>> 10) user.user2
>>     
>
> you might get them at the start.  Unless you have immediate expunge
> turned on, you shouldn't get too many after that.
>  
>   
>> Dec  4 13:55:09 brooks sync_client[17782]: RECORD MISMATCH WITH REPLICA: 
>> more recent on replica
>> Dec  4 13:55:09 brooks sync_client[17782]: master uid:31107 modseq:1 
>> last_updated:1276248211 internaldate:1276248211 flags:(\Seen)
>> Dec  4 13:55:09 brooks sync_client[17782]: replica uid:31107 modseq:1 
>> last_updated:1287574229 internaldate:1276248211 flags:(\Seen)
>>     
>
> There you go - higher "last_updated" on the replica.  This isn't really
> a problem - it will clean up with time as the last_updated fields get
> in sync between the two ends.
>
> I did debate not counting last_updated for the purpose of replication
> sync, but decided it's actually useful for determining which end is more
> recent, and you can't do that if the replica always looks newer!
>
> Bron.
>
>   

-- 
Stephen Carr
Computing Officer
School of Civil and Environmental Engineering
The University of Adelaide
Tel +618-8303-4313
Fax +618-8303-4359
Email sgcarr at civeng.adelaide.edu.au

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