syncrepl and LDAP_BUSY on LDBM by ITS#7904

Hi all, We got a trouble with 2.4.40 syncrepl in the the multi-master mode. I think is too complex for analyse, and so not yet testcase is ready. But I noticed a change in ITS#7904 and the impact of LDAP_BUSY upon syncrepl. http://www.openldap.org/devel/gitweb.cgi?p=openldap.git&a=search&... For instance, I assume that in case the LDAP_BUSY returned from ldap_sync_search(), then a syncrepl-connection would be closed and reestablished. Let see around the line 1554 of server/slapd/syncrepl.c and below. https://github.com/leo-yuriev/openldap-lmdb-challenge/blob/master/servers... Also, nowadays it is no repeatable read txn-isolation during the search and transfer data over a network. Does it influence upon syncrepl or not? Could anybody dispel my doubts? Leonid.