When sync'ing users from Ldap, intermittent User/Group/UserGroup membership is missing

Problem Statement:

Currently, Usersync sync's users/groups/usergroup in batches. In doing so, the user/group/usergroup at the end of the batch is not sync'ed. 
For example consider batch is of size 1000, so batch starts from 0-999 and  then  next batch starts from 1001-1999. So in each batch one user/group/usergroup is missing.