antirez/redis — pull request #1247 by bobzilladev (2013-08-14 22:39:46+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 2.6, would likely need changes for 2.8/unstable with the partial-sync changes.

ie:
repl-min-transfer-size 1g