RecordIO reader need to check if the environment is cloud or local, and choose to use the master client or the local RecordIO reader.@gongweibao
Created by: gongweibao
https://github.com/PaddlePaddle/Paddle/pull/2549#issuecomment-310203019
Created by: gongweibao
https://github.com/PaddlePaddle/Paddle/pull/2549#issuecomment-310203019