查阅flume的官方文档
Logger Sink

channel –
type – The component type name, needs to be logger
maxBytesToLog 16 Maximum number of bytes of the Event body to log

默认只输出 16个字节，我调整了 maxBytesToLog的大小，依然不管用
a1.sources = r1
a1.sinks = k1
a1.channels = c1

a1.sources.r1.type = exec
a1.sources.r1.command = tail -F /root/data/data.log
a1.sources.r1.shell = /bin/sh -c

a1.sinks.k1.type = logger
a1.sinks.k1.maxBytesToLog = 1600 --这个没有生效，是什么原因

a1.channels.c1.type = memory

a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1

问题1:
echo 012345678901234ffffffff >> data.log
只会打印出:012345678901234
应该答应出:012345678901234ffffffff
问题2:
echo 张三 >> data.log
打印不出日志