Full_Name: Quanah Gibson-Mount Version: 2.4.45 OS: N/A URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (47.208.148.239)

If one has configured N-WAY MMR in such a fashion that only one master ever gets the write ops (whether this is mirrormode or other methodologies), and there are zero entries in the database with an entryCSN of the other masters in the system, attempts to bring those other masters back up will result in a REFRESH phase on those masters, and potentially destabilize the entire cluster (See ITS#8789 for example).

To avoid this, we should document that best practice involves having one object per master that is only ever modified by that master, so there is always a minimum of one object in the database with a CSN matching that master. This should avoid the REFRESH issue when bringing up a failed master.