http://blog.csdn.net/xiao_jun_0820/article/details/38333171
a1.sinkgroups.g1.processor.selector
http://blog.csdn.net/lskyne/article/details/37662835
http://shiyanjun.cn/archives/915.html
flume
原文：http://www.cnblogs.com/wjsshide/p/5023047.html
