Re: (ITS#5170) Issue with mirrormode: endless loop when multiple add/delete

[hyc@symas.com]

ando@sys-net.it wrote:
> Full_Name: Pierangelo Masarati
> Version: HEAD/re24
> OS: irrelevant
> URL: ftp://ftp.openldap.org/incoming/
> Submission from: (NULL) (131.175.154.35)
> Submitted by: ando
> 
> 
> There was an issue with mirror mode, which caused an endless replication loop
> when repeated, very close add/delete of the same object, like those performed by
> the slapd-addel tester tool, were performed in a multimaster environment using
> refreahAndPersist.
> 
> Howard fixed this by letting syncrepl_entry() propagate the replication cookie,
> if available, so that modifications don't get sent back to the SID that
> generated them (please correct me if I got it wrong).  The same issue is
> probably affecting cascaded syncrepl, but not delta-syncrepl.

Right, refreshAndPersist in a cascaded syncrepl would also be affected by the 
patch, although so far there's no indication that this caused any actual problems.

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