antirez/redis — pull request #1971 by bobzilladev (2014-08-27 18:20:43+00:00)
Title: Added config: slaves refuse sync if too little data

Add a configuration option for slaves to refuse syncing to a master if there is not enough data in the master. Based on 2.8, basically a rebase of https://github.com/antirez/redis/pull/1247

ie:
repl-min-transfer-size 1g