http://blog.csdn.net/hijk139/article/details/8465094
做以下修改
agent.channels.memoryChanne3.keep-alive = 60
agent.channels.memoryChanne3.capacity = 1000000
修改java最大内存大小
vi bin/flume-ng
JAVA_OPTS="-Xmx2048m"
参考http://fangjian0423.github.io/2016/01/19/flume-channel-full-exception/