Re: (ITS#6405) test043-delta-syncrepl failed - producer and consumer databases differ

[hyc@symas.com]

Howard Chu wrote:
> Michael Ströder wrote:
>> Howard Chu wrote:
>>> michael@stroeder.com wrote:
>>>> Download content of testrun/ here:
>>>>
>>>> http://www.stroeder.com/temp/openldap/its6405-test043-testrun.tar.gz
>>>
>>> Shows that a change was replicated to the consumer and ignored on the
>>> consumer. But since there's no SYNC logging enabled, we don't see the
>>> reason why the consumer did this...
>>
>> It does not happen very often. This time I had to run it almost 50 times.
>>
>> Hope I got the sync log level right herein:
>>
>> http://www.stroeder.com/temp/openldap/its6405-test043-testrun-sync-log.tar.bz2
>
> I think you have an OS / clock problem. The skipped op in this case got
> assigned an entryCSN older than the immediately preceding op. (The missing op
> has CSN 20091130201002.575384Z. The preceding op was 20091130201002.577244Z)
> This test doesn't run any concurrent operations, each new op is only submitted
> after the previous one completes, so this is not a thread concurrency issue,
> your system clock is going backwards.
>
A patch for this is now in libldap/util-int.c in HEAD.

-- 
   -- Howard Chu
   CTO, Symas Corp.           http://www.symas.com
   Director, Highland Sun     http://highlandsun.com/hyc/
   Chief Architect, OpenLDAP  http://www.openldap.org/project/