(ITS#5376) Full sync fails with delta-syncrepl, refreshAndPersist, and high modifications

[quanah@zimbra.com]

Full_Name: Quanah Gibson-Mount
Version: 2.3.40
OS: 
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (24.23.156.219)


If you start a replica with an empty DB, using delta-sync replication, and the
master is receiving a high rate of changes, the Refresh phase will skip entries
that have been modified.  When it moves to the "persist" phase, delta-syncrepl
will send modification diffs to those entries rather than the full entries, so
entries end up missing, having never been sent in a full form.