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(ITS#8100) Empty accesslog causes issues with delta-syncrepl MMR configurations

Full_Name: Quanah Gibson-Mount
Version: 2.4.39
OS: Linux 2.6
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (

When one has an MMR setup using delta-syncrepl, and the masters get into a
situation where one is out of sync, or adding a new MMR node to an existing
cluster, things will be broken until the new/reloaded node has a write op that
goes to the accesslog DB.  In an existing cluster, where a node is being
reloaded, it causes all nodes to go into an endless looping fallback sync until
that write occurs.