Channels

实时采集（实时流）

Memory Channel（内存Channels）

• 当前缓冲区最多能够缓冲多少条数据（Event）：a1.channels.c1.capacity
• 数据源一次最多能写多少数据到缓冲区：a1.channels.c1.transactionCapacity

代码

# example.conf: A single-node Flume configuration
# Name the components on this agent
a1.sources = r1
a1.sinks = k1
a1.channels = c1
# Describe/configure the source
a1.sources.r1.type = exec
a1.sources.r1.command = tail -F /home/hadoop/pikaqiu.txt
# Describe the sink
a1.sinks.k1.type = logger
# Use a channel which buffers events in memory
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000
a1.channels.c1.transactionCapacity = 100
# Bind the source and sink to the channel
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1

启动脚本

flume-ng agent --conf conf --conf-file /home/hadoop/kylin/f.conf --name a1
-Dflume.root.logger=INFO,console